Each period within the time scale is different as it represents a unique slice of Earth's history, with different changes in the planet's environment, climate, and life forms.
What is the time scale about?The Geologic Time Scale is divided into several eons, eras, periods, and epochs, each representing a specific interval of time characterized by distinct changes in the Earth's environment, climate, and life forms.
The largest division of the Geologic Time Scale is the eon. There are two eons: the Precambrian and the Phanerozoic. The Precambrian eon covers the majority of Earth's history, from the formation of the planet about 4.6 billion years ago to the beginning of the Cambrian period about 541 million years ago. The Phanerozoic eon began with the Cambrian period and continues to the present day.
In conclusion, each eon is divided into eras, which are further divided into periods.
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Help please! which of the following describes the way in which a plant, such as an oak tree, obtains and uses energy?
A. It absorbs glucose sugar through the roots and breaks it down into atp during cellular respiration
B. it produces glucose sugar through cellular respiration and breaks it down through photosynthesis to produce atp
C. it produces glucose sugar through photosynthesis and breaks it down through cellular respiration to produce atp
D. it absorbs energy from sunlight and directly converts the energy into atp through photosynthesis
The answer is D
It takes the rays from the sunlight and turns them into ATP.
Answer:
The answer is D
It takes the rays from the sunlight and turns them into ATP.
Clouds,
Ocean
2 River
Mountains
Which of these statements best describes the
purpose of the arrows in the diagram?
A. The arrows show how clouds form.
B. The arrows show how erosion occurs.
C. The arrows show the processes of the water
cycle.
D. The arrows show the movement of water to
the ocean.
Answer:
I cant see the diagram but the answer is most likely C
Explanation:
What are these chromosomes considered as heterozygous?
Heterozygous genotype is the one in which the individual has two different alleles.
Homozygous and heterozygous are the terminologies which are used to describe the allele pairs which are present in a particular organism. Organisms that happen to carry two identical alleles are known to have a homozygous genotype of that allele whereas those organisms which have different alleles are known as heterozygous.
For example, if the allele "W" codes for white fur in dogs and the allele "w" codes for brown fur in dog, then a heterozygous individual will have the genotype "Ww" and a homozygous individual will have the genotype "ww" or "WW".
-- The given question is incomplete, the complete question is
"What is heterozygous genotype?"--
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Which colour change is observed in the leaf?
Depending on the strength of the light hitting it and the amount of light reflecting from it, the leaf will assume the color that it cannot absorb, which could be red or blue.
The leaves quickly changed color from green to yellow within a few days, proving that even in the middle of summer, tree leaves may transform from summer to fall hue when exposed to insufficient sunshine. 10–20% is eliminated, and the remaining amounts are absorbed.
Chlorophyll decomposes, the green color vanishes, and the yellow to orange hues emerge, contributing to the fall brilliance of the leaves. Red anthocyanin pigments evolve as a result of other chemical changes that could take place at the same time.
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Correct Question:
What was the color change observed in areas of leaf that were not exposed to sunlight?
How does molecule marked A enter our body
Answer:
breathing. It contains oxygen and that is what we use to breath.
Explanation:
Which type of nutrients provide valuable energy for muscles?
Answer:
carbs
Explanation:
Carbohydrates – or carbs – are the body's primary fuel. They provide energy for your muscles and the central nervous system during movement and exercise. Wohlford says 45-65% of calories per day should come from carbohydrates.
What is the purpose of ground tissue?
A) To cover the plant and protect it from water loss and damage
B) To support the plant and make and store food
C) To transport water and nutrients throughout the plant
Ground tissue in stems provides support the plant and make and food. The correct option is B
What is ground tissue?Ground tissue is every one of the tissues aside from the vascular packs and the epidermis. They structure the inside of organs with the exemption being the vascular framework.
They include basic tissues for example such as
SclerenchymaCollenchymaParenchymaTherefore, ground tissue makes up much of the interior of a plant and carries out basic metabolic functions. Ground tissue in stems provides support and may store food or water. Ground tissues in roots may also store food.
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Question 4
What happens when warm water rises in the ocean?
OA Ocean levels drop near the poles.
B. Cool water flows in to take its place.
C. Temperatures near the equator rise.
D. Warm air sinks to meet.
Turn In
13
17
Answer:
B. Cool water flows in to take its place
Explanation:
You want to know what happens when warm water rises in the ocean.
CurrentsIn any fluid, currents will arise from differences in fluid density. When fluid moves out of a space, other fluid flows into that space to fill the void.
Ocean currentsIn general, ocean currents arise from differences in temperature and salinity. Warmer and less saline (fresh) water have less density than colder or more saline water. As a consequence of its reduced density, warmer (or less saline) water will experience pressure moving it upward. It is replaced by water of lower temperature or greater salinity.
When warm water rises, cool water flows in to take its place.
How do biomedical engineers contribute to society?
biomedical engineers contribute to society as they help address the health challenges they all encounter.
To address health concerns that they all encounter, bioengineers collaborate with other healthcare professionals like doctors, nurses, surgeons, and technicians. Due to this, essential tools and gadgets including MRI machines, dialysis machines, diagnostic instruments, and ultrasound have been developed.
The integration of traditional engineering and health has greatly advanced in recent years. Thanks to advancements in technology, medicine, and resources, biomedical engineers can now work in a setting that fosters innovation more than ever before, enabling them to develop solutions for a wide range of health problems.
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What is the last phase of the Calvin cycle called?
The last phase of the Calvin cycle is called the "regeneration phase" or the "reductive phase."
The Calvin cycle, also known as the carbon fixation cycle or the dark reaction of photosynthesis, is the process by which plants use energy from sunlight to convert carbon dioxide (CO2) into glucose and other sugars. The cycle is named after Melvin Calvin, who was awarded the Nobel Prize in Chemistry in 1961 for his work on the cycle.
The last phase is called the "regeneration phase" or the "reductive phase" wherein the Calvin cycle regenerates the CO2 acceptor (RuBP) using the products of the previous stages, CO2 and NADPH, so that the cycle can continue. This phase is also when the CO2 is fixed and the cycle produces G3P, a 3-carbon molecule which can be used to make glucose or other sugars by plants.
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In cats, black fur color is caused by an X-linked allele, while the other allele at this locus causes orange color. The heterozygous allele is tortoiseshell. Normally, only females have the tortoiseshell phenotype because
A. a male inherits only one allele of the X-linked gene for hair color
B. multiple crossovers on the Y chromosome prevent orange pigment production
C. only males can have Barr bodies
D. genetic imprinting prevents males from inheriting tortoiseshell traits from a mother
Normally, only females have the tortoiseshell phenotype because a male inherits only one allele of the X-linked gene for hair color, hence option A is correct.
Why do females have the tortoiseshell phenotype?The males perish during embryonic development, only female cats often exhibit the tortoiseshell phenotype. The X-linked gene governing hair color can only be inherited by males as one allele.
This is so because male cats only have one X and one Y chromosome, whereas two X chromosomes are required to generate the distinctive tortoiseshell coloration of black, orange, and yellow/gold.
Therefore, option A is correct.
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What adaptations enable aquatic life to exist underground in an aquifer?
Sensory adaptations such as antennae, touch receptors and chemoreceptors, are usually highly developed in an underground dwelling species.
Adaptation is termed as any heritable trait which helps an organism, such as animal or plant, to survive and reproduce in its environment. It can be structural means physical part of the organism. Also it can be behavioral.
Sensory adaptations are those species which have very low metabolism and allowing them to live on a very little food. This adaptation having a constant temperatures of aquifer waters, that compared to the surface water temperatures which can vary quickly or widely. Groundwater species live in a very stable as well as predictable environment.
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How many valence electrons are transferred from the nitrogen atom to potassium in potassium nitride.
In the formation of potassium nitride, zero valence electrons are transferred from nitrogen to potassium.
A valence electron is an electron in the outer shell of an atom that can participate in the formation of a chemical bond if the outer shell is not closed. A shared pair forms in a single covalent bond, with each atom contributing one valence electron.
From potassium to nitrogen, electrons are transferred.
The outermost cells contain valence electrons, which are capable of forming chemical bonds.
The formula is:
6K + N₂ ⇒ 2K₃N
K = K⁺ + e⁻
NO₃ + e⁻ = NO³⁻
Potassium transports electrons to nitrogen.
As a result, nitrogen transfers no electrons (zero) to potassium.
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What are the three 3 chromosomal disorder?
The three most commonly seen chromosomal disorders are Down syndrome, Klinefelter syndrome, and Turner syndrome.
Down syndrome is a chromosomal disorder caused by an extra copy of chromosome 21. It is the most common chromosomal disorder, and is characterized by physical and intellectual disability. People with Down syndrome may have a variety of physical characteristics, such as a round face, an upward slant to the eyes, and a short neck. They may also experience learning difficulties, speech delays, and behavioral problems.
Klinefelter syndrome is a chromosomal disorder that is caused by an extra X chromosome. It occurs in males only, and is characterized by low testosterone, small testes, and infertility. People with Klinefelter syndrome may also have physical features such as a tall stature, long limbs, and gynecomastia (enlarged breasts). They may also experience learning difficulties, speech delays, and behavioral problems.
Turner syndrome is a chromosomal disorder caused by missing or incomplete X chromosome. It is the second most common chromosomal disorder, and is characterized by physical and intellectual disability. People with Turner syndrome may have a variety of physical characteristics, such as a short stature, webbed neck, and a broad chest. They may also experience learning difficulties, speech delays, and behavioral problems.
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What is the net charge of an ion that has 9 protons 11 neutrons and 11 electrons
2-
Explanation:Net charge describes the overall negative or positive charge of an atom or compound. Also, note that it is common in chemistry to write the sign of the charge after the number. Nevertheless, the charges +1 and 1+ are completely the same.
Calculating Charge
To find the charge of an atom you should look at the number of protons and electrons. Since neutrons have a neutral charge, aka no charge, they do not factor into net charge. On the other hand, protons have a positive charge and electrons have a negative charge. Each proton has a 1+ charge and each electron has a 1- charge.
To find the net charge find the total charge of the electrons and the total charge of protons, then add them together. Since there are 9 protons, the total proton charge is 9+. There are 11 electrons, so the total electron charge is 11-. For the purposes of doing the math, we can move the sign to the front.
(+9) + (-11) = -2Thus, the net charge is 2-.
Anions and Cations
To work with ions it is important to understand the vocabulary surrounding ions. Firstly, negative ions, like the one described in the question, are called anions. You can remember this as "A Negative ION". Also, positive ions, ions with positive net charges, are called cations. You can remember that the "t" looks like a plus sign.
What have scientist learned from the human genome project
Answer:The HGP found that, in fact, humans have only about 20,000-25,000 genes (current estimates peg this to the lower end of that range). This number was quite a surprise to many scientists – many other organisms, such as rice and water fleas, actually have many more genes than we do!
Explanation:
What is photosynthesis? And what is cellular respiration?
(Provide definitions and examples for both)
How are the processes of photosynthesis and cellular respiration connected? Explain how plants and animals mutually benefit each other using these processes.
Answer:
Please read below:
Explanation:
Photosynthesis is the process by which plants, algae, and some bacteria capture energy from sunlight and use it to produce food (sugars) from carbon dioxide and water. During photosynthesis, oxygen is also released as a by-product. Examples of photosynthetic organisms include plants, algae, and some bacteria.
Cellular respiration is the process by which cells break down food molecules to produce energy, which is then used to power the cell's activities. It involves the conversion of the chemical energy stored in carbohydrates, fats, and proteins into a form of energy that can be used for cellular activities. Examples of cellular respiration include glycolysis and the Krebs cycle.
Photosynthesis and cellular respiration are connected in that they are part of a cycle of energy exchange between plants and animals. During photosynthesis, plants use energy from the sun to convert carbon dioxide and water into oxygen and glucose.
During cellular respiration, animals use oxygen and glucose to produce energy and carbon dioxide. Plants and animals benefit each other in that plants use the carbon dioxide produced by animals to perform photosynthesis, and animals use the oxygen produced by plants for respiration. In this way, plants and animals form a mutually beneficial cycle of energy exchange.
Producers are organisms that obtain their energy from sunlight. Consumers obtain their energy from eating food. This food may be producers, other consumers, or both. Decomposers obtain their energy from the breakdown of decaying matter. Students are asked to make a table classifying four organisms as producer, consumer, or decomposer. Which student filled out the table correctly?.
Organisms known as producers get their energy from sunshine. Food is how consumers get their energy. producers, consumers, or both, of this cuisine. Energy is produced by decomposers as a result of the breakdown of decaying matter.
How do producers use the energy that sunlight provides?How do producers manage to magically turn sunshine energy into molecules that other species can utilise? They achieve this feat by using a biological process known as photosynthesis. Sunlight energy is used in this process to break water molecules into hydrogen and oxygen.
How is the energy that sunshine gives for producers used?How do manufacturers suddenly transform solar energy into molecules that other organisms can use? They use the biological process of photosynthesis to accomplish this accomplishment. In this procedure, sunlight energy is used to split water molecules into hydrogen and oxygen.
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Please help me with this im lost
DNA: TAC CTC CTT TGA ATT TAC CTT ACT CGT TGT ATT AAA TAT CAG CTC
mRNA: AUG GAG GAA ACU UAA AUG GAA UGA GCA ACA UAA UUU AUA GUC GAG
Amino Acids: MET GLU GLU THR STOP MET GLU STOP ARG THR STOP PHE ILE VAL GLU
What are transcription and translation?
Transcription is the process through which a segment of DNA is copied by the mRNA molecule to carry the necessary genetic information to the cytoplasm to grow a new molecule.
Translation is the other process that follows transcription. During translation, rRNA reads mRNA information, while tRNA identifies mRNA codons and adds the amino acids they code for to build the new protein.
The exposed example is incomplete. Since I could not find the complete question, I will fill in the boxes for mRNA and amino acids. You should complete the secret message using the whole data.
DNA: mRNA: Amino Acids:
TAC AUG MET
CTC GAG GLU
CTT GAA GLU
TGA ACU THR
ATT UAA STOP
TAC AUG MET
CTT GAA GLU
ACT UGA STOP
CGT GCA ARG
TGT ACA THR
ATT UAA STOP
AAA UUU PHE
TAT AUA ILE
CAG GUC VAL
CTC GAG GLU
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Which of the following neurons correspond to the gustatory-salivary reflex's afferent and efferent components, respectively
As stated in the preceding statement affarent, a sensory neuron Efferent pre-ganglionic neuron; neither is an interneuron.
How many years do neurons have?Adult neurons may last a lifetime and are still pliable after many years. Children are particularly good at picking up new languages because of this, according to W.A. Harris (left), who was joined by Joshua Sanes, head of the Harvard Center for Brain Science. 11 May 2022
What materials make up neurons?The three main parts of a neuron are dendrites, axons, as well as the cell body, or soma, which could be compared toward the branches, roots, as well as trunk of a tree (see illustration below). A neuron's dendrite, or "tree branch," receives information from nearby cells.
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Circle the chromosomal abnormality shown on this karyotype.
Karyotypes can provide information about chromosomal abnormalities such as non-disjunction. The exposed karyotype belongs to a person who suffers from Turner syndrome, in which one of the X chromosomes is missing.
What is non-disjunction?
Non-disjunction is the proper separation failure of chromosomes during anaphase I or II of the meiotic division.
This mistake in segregation results in the production of abnormal gametes containing a greater or lesser number of chromosomes than is found in a normal cell. Consequently, the individual may develop a trisomy or monosomy.
Non-disjunction is a cause of various abnormal medical conditions, including Down syndrome and Turner syndrome.
The Turner syndrome is the monosomy in the X-chromosome (X-1).
The exposed karyotype belongs to a person with the Turner syndrome. We can see only one X chromosome, while the other one is missing.
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9. Following a a SSYyx SsYy cross what fraction of the offspring are predicted to have a genotype that is
beterozygous for both characteristics?
Answer:There are 4 out of 16 possible combinations of gametes from an SsYy x SsYy cross with the genotype of SsYy. We would therefore predict that 4/16 (or 1/4) of the offspring of the cross would be homozygous for both traits. Note that there is a different phenotype for each of the 4 different combinations of alleles.
The blue color of the sky results from the scattering of sunlight by air molecules.
Answer:
Yes
Explanation:
Sunlight is scattered by tiny air molecules (known as Rayleigh scattering) increases as the wavelength of light decreases. Violet and blue light have the shortest wavelengths and red light has the longest. Therefore, blue light is scattered more than red light and the sky appears blue during the day.
The sky appears blue to the human eye as the short waves of blue light are scattered more than the other colours in the spectrum, making the blue light more visible.
What is a soil survey?
O It reveals the erosion of the soil to help determine best use.
O It reveals the water supply in the soil to help determine best use.
O. It reveals the characteristics of the soil to help determine best use.
O It reveals the ground cover of the soil to help determine best use.
Answer:
C. It reveals the characteristics of the soil to help determine best use.
Explanation:
Soil surveying information describes, defines, and classifies the soils and interprets them. It documents the kinds of soil and quality of the soils in the surveyed area. It contains soil information to determine which soil is needed for the intended uses wanted.
Which of the following is NOT an example of environmental controls to reduce disease transmission in the surgical suite?
Treatment of the skin with an antiseptic or surgical scrub before donning sterile clothing.
What is in a surgical suite?A surgical suite is a collection of one or more surgical units and ancillary spaces including a scrub room, recovery room, and sterile storage area. However, foul-smelling garments, towels, bedsheets, handkerchiefs, and surgical bandages can also be found among fomites. SARS-CoV-2 was shown to survive on various surfaces for 4 to 72 hours in a lab environment.
What causes a fever, and how does it help the body fight infection?When the hypothalamus responds by raising body temperature over normal, a fever results. The above-normal temperatures are believed to support the body's defense against microbial invasion because they promote the movement, activity, and multiplication of white blood cells as well as the formation of antibodies.
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the complete question is-
Which of the following is NOT an example of environmental controls to reduce disease transmission in the surgical suite?
gene that is expressed only in the homozygous state
A gene that is expressed only in the homozygous state is known as recessive.
Alleles of a gene can be either dominant or recessive. Dominant alleles show their effect even when they are present in the heterozygous state. The recessive alleles only show effect when in homozygous state. Only the homozygous individuals, which are the ones having two copies, will experience the effects of recessive alleles.
For example, the allele for blue eyes is recessive and is represented by "b" and the allele for brown eyes is dominant and is represented by "B". If the genotype of the individual is BB or Bb, they will have brown eyes as they B is the dominant allele. If the genotype of the individual is bb, they'll have blue eyes as b is a recessive allele and will only show effect in homozygous condition.
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Indicate whether each function is performed by a plant's green
structures (G), its leaf openings (L), or its roots (R).
Plants use their green structures, leaf openings, and roots to perform a variety of functions.
The green structures Taking in water and nutrients from the soil: RMaking food using sunlight: GAbsorbing carbon dioxide from the air: GBalancing the plant on the ground: RAbsorbing nutrients from the soil: R
The roots of a plant are the main structures responsible for absorbing nutrients from the soil. Roots absorb water and essential minerals like nitrogen, phosphorus, and potassium which are necessary for the growth and development of a plant. They also help anchor the plant in the soil.Photosynthesis: G
Photosynthesis is a process in which green structures like leaves, stems, and chloroplasts absorb light energy and convert it into chemical energy. This energy is then stored in the form of carbohydrates like glucose which the plant uses for nutrition and growth.Ventilation: L
Leaf openings like stomata, lenticels, and hydathodes are responsible for the ventilation of a plant. They help to regulate the temperature of the plant and exchange gases like oxygen and carbon dioxide. This helps the plant to stay healthy and vigorous.Storage of food: G
The green structures of a plant are mainly responsible for the storage of food. They contain chloroplasts which are responsible for the conversion of light energy into chemical energy. This energy is then stored in the form of carbohydrates like glucose which the plant uses for nutrition and growth.To learn more about The green structures refer to:
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Scientists predict that climate change will cause more cases of extreme weather events in the future.
Which of the following extreme weather events do scientists have the strongest evidence for?
The U.S. economy's agriculture industry is significant. Each year, the United States economy receives more than $300 billion from the production of crops, cattle, and seafood.
What is Climate change?The agricultural and food sectors contribute more than $750 billion to the gross domestic product when food-service and other industries associated with agriculture are taken into account.
The climate has a significant influence on both agriculture and fishing. In some regions, rising temperatures and carbon dioxide (CO2) levels can improve crop yields.
Food safety may be at risk as a result of changes in the frequency and severity of floods and droughts, which could present difficulties for ranchers and farmers.
Therefore, The U.S. economy's agriculture industry is significant. Each year, the United States economy receives more than $300 billion from the production of crops, cattle, and seafood.
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All of the following are primary functions of flowers except___
Photosynthesis is a primary function of leaves and is not a process which occurs in flowers.
Flowers are an important part of the plant which are involved in a number of different functions. Flowers can be either unisexual, that is, they contain either the male or female reproductive organs or they can be bisexual that is, they contain both the male and the female reproductive organs.
The functions of the flowers include production of the eggs, production of pollen grains, sexual reproduction etc. Photosynthesis is the process with the help of which a plant produces food. It occurs in the leaves of the plant and not the flowers.
--The given question is incomplete, the correct question is
"All of the following are primary functions of flowers except___ a. Sexual reproduction, b. Photosynthesis, c. Egg production, d. Pollen Production
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How many minutes of vigorous intensity aerobic physical activity should adults get per week?
To obtain substantial health benefits, adults should do at least 75 minutes per week of vigorous-intensity aerobic physical activity.
Physical activity can be defined as any motor action which is carried out in the daily life of an individual which leads to caloric expenditure and includes the movements of all body parts.
A regular indulgence in a high intensity aerobic workout significantly reduces the risk of developing heart diseases, diabetes and keeps the body weight in check. For this, WHO has recommended that an adult should engage in at least 150 minutes every week of low or intermediate intensity physical activity or at least 75 minutes of vigorous-intense aerobic physical exercise.
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