Answer:who knows
Explanation:
Genetic variation _____. Group of answer choices is created by the direct action of natural selection always arises in response to changes in the environment must be present in a population before natural selection can act upon the population tends to be reduced when diploid organisms produce gametes
Answer:
It must be present in a population before natural selection can act upon the population.
Explanation:
Genetic variation refers to the variations that exists in the DNA of the individuals. These variations are caused mainly by mutation and genetic recombination of the DNA. It helps in the process of evolution. Genetic variations helps in building the mechanisms of change that helps in the process of evolution. Genetic variation is caused highly because of process of sexual reproduction. The offspring exhibit various genetic variation.
True or False: Herbivores would be able to survive without the sun
True
False
Answer:
false. herbivores depend on the sun because the plants depend on the sun. the plants would not be able to survive without the sun, therefore neither would the herbivores.
Explanation:
Answer:
For how long?
If you are talking about a short while then yes
but if you are talking about years then no
Explanation:
plants need sunlight for photosynthesis, therefore if the sun disappeared, then plants will slowly die out, increasing competition in herbivores and slowly starving them
CO2 is a product of cellular respiration. How do you think humans get rid of the CO2?
Answer:
They get rid of C02 through the lungs. CO2 is waste gas produced by cells of our body. It is passed through capillaries to the veins and to the lung through blood. Lungs remove CO2.
2. Which of the following statements is true?
D
A Cells don't need nutrients.
B Chloroplasts contain a cell's
genetic material.
C Cells grow and reproduce.
All nonliving things are made
of cells.
D
Answer:
Option C
Cells grow and reproduce
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In addition to the moon, artificial satellites also orbit Earth.
Which factor(s) must be taken into account to ensure that a
satellite keeps orbiting Earth rather than falling back to
Earth's surface?
Answer:
»Maximum escape velocity to keep them in the orbit.
»They should have a mass not greater than that of the earth.
Explain how the greenhouse effect keeps our planet warm. Please use
the following terms, visible light, infrared waves, and absorption. (2 - 3
sentences)
Your answer
nswI
Which of the following is a health risk associated with a depleted ozone
5 points
layer? -
isole ain
Answer:
When the Sun's energy/ visible light reaches the Earth's atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases. The absorbed energy warms the atmosphere and the surface of the Earth
Skin cancer, because it is the skin that is affected by the unhealthy rays from the sun that can penetrate when the ozone layer is depleted
in comparing two species that look different, how could a comparison of the species genes contribute to an understanding of their evolutionary relationship? this is a written response pls help:(
Answer:
The more similar the base sequence of the DNA (their genes), the more closely related they will be!
Explanation:
Hope that helps!
water moving along the ground, into and including rivers
and streams.
is it
Transpiration
Infiltration
Percolation
Surface runoff
Answer:
surface runoff is the answer
Plants play a role in this cycle by completing photosynthesis:
Answer:Plants don't eat food; they have to create it for themselves. They do this through a process known as photosynthesis. Photosynthesis uses water, carbon dioxide from the air and energy from the sun or another light source to create glucose or sugar. This glucose provides the energy the plant needs in order to survive
Explanation:
Someone please help me answer this, I need help
The run off of which of these can result in cultural eutrophication
sulfur and dihydrogen monoxide
The blue cell in the cartoon would be classified as what type of cell?
A. prokaryotic
B. eukaryotic
Answer:
The blue cell in the cartooon would be calssified as prokaryotic.
The blue cell in the cartoon would be classified as prokaryotic cell.
What are the difference between of prokaryotic cell and eukaryotic cell ?Prokaryotic cell are single celled organism, its size varies from 0.2 μm – 2.0 μm while eukaryotic cell are multi-cellular organism and its size ranges from 10 μm – 100 μm in diameter.
Cell wall is present in prokaryotes but plant cell as an eukaryotic cell have cell wall; in Prokaryotes True Nucleus is absent while in eukaryotes true nucleus is present.
In prokaryotes Ribosomes are Smaller in size having 70s type, spherical in shape while in eukaryotes ribosomes are larger in size, 80s type and linear shaped in structure.
Circular type of DNA present in prokaryotes where as in eukaryotes DNA is Linear in shape; Mitochondria is absent in prokaryotes where as it is present in eukaryotes.
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Describe the trophic levels in a community
What do you think? Are polar bears doomed to go extinct or do you think they will survive?
Answer:
Polar bears will go extinct by the end of the 21st century.
Explanation:
Polar bears live at the North Pole. Due to global warming, the ice at the poles is melting at an alarming rate. Soon there won't be any glaciers. Without the ice Polar bears will lose their home. The climate on Earth is becoming warmer day by day. So even if the Polar bears survive they will not be able to adapt to the warmer climate. Thus leading to their extinction.
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"Speaking of fossil fuels; the chart above shows the common uses for which fossil fuel?"*
Petroleum
Coal
Natural Gas
Nuclear
Answer:
coal
Explanation:
I need 20 characters so Im typing this in hope of filling the space
Assume that the sequence of bases in one strand of DNA molecule is a GACTTACGTACC what is the sequence of complementary bases in the other strand of DNA during DNA replication
I need help with a science problem!
Answer:
Convergent Boundary
Explanation:
Answer:
A
Explanation:
its kinda hard to see but i am sure its a if not i am sooooooooooooo sorry
During the process of cellular respiration, eagerly is stored in the glucose molecule is used to form
Answer:
Specifically, during cellular respiration, the energy stored in glucose is transferred to ATP (Figure below). ATP, or adenosine triphosphate, is chemical energy the cell can use. It is the molecule that provides energy for your cells to perform work, such as moving your muscles as you walk down the street.
Explanation:
3. How might polar bears population suddenly increase? How would this affect the ecosystem?
Which of the following is NOT a
piece of evidence that Darwin
used to support his theory of
evolution?
A. fossil record
B. similarities among different species
C. the amount of shared DNA between species
Fossil record is not a piece of evidence that Darwin used to support his theory of evolution.
What is the theory of evolution?Evolution is the process of change in all forms of life over generations, and evolutionary biology is the study of how evolution occurs. Biological populations evolve through genetic changes that correspond to changes in the organisms' observable traits.
Darwin proposed that species can change over time, that new species come from pre-existing species, and that all species share a common ancestor. In this model, each species has its own unique set of heritable (genetic) differences from the common ancestor.
The current evolutionary theories can be categorized as Darwinism and Lamarckism. Charles Darwin theorized Darwinism. He explained his theory of natural selection in his book, On the Origin of Species.
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Answer:A.fossil record
Explanation:
what is the function of chromosomes
A- regulating the production of specific proteins
B- producing energy through metabolism
C- transmitting electrical signal through the body
D- controlling the rate of cellular division
PLEASE PLEASE ANSWER FAST PLEASE
what are the most common c0vId vaccine myths and how did they start? Explain your answer.
Answer:
The most common myths are:
- C0vid2019 vaccines cause autism
- C0vid2019 vaccines may modify your DNA
- C0vid2019 vaccines are unsafe
Explanation:
The most common myths associated with C0vid2019 vaccines are:
1- C0vid2019 vaccines may cause autism: In 1998, Andrew Wakefield and colleagues published a controversial study in the Lancet where they suggested that the measles, mumps, and rubella (MMR) vaccine may cause autism in some children. However, it has been showed that this study was based on erroneous statements and therefore this publication was retracted.
2- C0vid2019 vaccine may modify your DNA: it has been suggested that vaccines based on viral vectors (e.g. adenoviruses) and mRNA vaccines may modify the DNA of cells. This statement is false because these technologies cannot alter the DNA sequence. These vaccines are based on the production of an mRNA sequence that is translated into a viral protein (spike protein) which triggers an immune response
- C0vid2019 vaccines are unsafe: some people believe that C0vid2019 vaccines are unsafe because they were developed quickly. However, this statement is false because all vaccines (including C0vid2019 vaccines) need to follow rigorous safety standards to be approved by governmental agencies (i.e., they approved all clinical trials).
Explain why an observer in New York State sees some different constellations in the night sky when Earth is at location A compared to when Earth is at location C.
Answer:
The Earth is Rotating to another location and shownig different groups of Stars
Explanation:
An observer in New York State sees some different constellations in the night sky when Earth is at location A compared to when Earth is at location C because of the continuous rotation of the earth on its axis.
What do you mean by Constellation?A constellation may be defined as a collection of stars that significantly form a recognizable and identifiable pattern in the sky mostly in the nighttime. These collections of stars are traditionally named after their apparent form or identified with a mythological figure.
According to the context of this question, when an observer in New York State sees some different constellations in the night sky when the earth is at location A, but the visualization by an observer may change when the earth is located at location C, this is because of the gradual and continuous rotation of the earth on its axis.
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hii! i’ll give brainliest pls help
Answer:a or b not sure
Explanation:
Describe what a sustainable ecosystem looks like with a real-life example
Answer:
The Appalachian Region in the southwestern United States, which is one of the most richly biodiverse regions in the world. Overall, cities that recycle & reuse basically exist in harmony with the surrounding environments are also considered sustainable ecosystems. A sustainable ecosystem is one where even when things are taken, nature still has enough to function and the ecosystem/area is healthy. But dealing with domestic, industrial, & agricultural waste is a growing environmental issue. That is NOT a sustainable ecosystem.
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The movement of water across a membrane does not require a concentration gradient.
A. True
B. False
Answer:
false
Explanation:
because it is osmosis any liquid (water) can move through the membrane withought energy
Answer:
False
Explanation:
Identify one solution that people around the world are doing to decrease our trash amount
Answer:
Use a reusable bottle/cup for beverages on-the-go
Use reusable grocery bags, and not just for groceries. ...
Purchase wisely and recycle. ...
Compost it! ...
Avoid single-use food and drink containers and utensils. ...
Buy secondhand items and donate used goods. ...
Shop local farmers markets and buy in bulk to reduce packaging.
Because the genetic code is non-overlapping, a missense mutation (from a single nucleotide change) results in the alteration of ___________, and the resulting protein has _____________.
Answer:
only one codon; a single amino acid change
Explanation:
The genetic code is a set of nearly universal rules by which living cells direct the translation of the information encoded in genetic material (either DNA or RNA) into amino acids. The messenger RNA (mRNA) sequence obtained from the process of transcription consists of triplets of nucleotides or 'codons' which are used to code for all the 20 essential amino acids during translation. The genetic code is not overlapping because each letter contained in the genetic material (i.e., each nucleotide) cannot be used for two different codons. In consequence, a single substitution (mutation) in the nucleotide sequence can change only one codon, thereby changing only one amino acid in the polypeptide chain.
You are a pediatrician and have determined that a young patient is at risk for rickets. Outline
a treatment you would recommend to the child's parents and why you recommend that
course of action.
Answer:
The correct answer is - to get enough vitamin D.
Explanation:
Rickets is a condition that causes softening and weakening of the bones due to prolonged vitamin D deficiency. It takes place more in the children compared to adults.
This can be treated by incorporating Vitamin D rich foods into the diet and get vitamin D from sunlight. Sunlight helps in developing Vitamin D naturally. The patient should go outside and eat beef liver, fatty tuna, and other food rich in vitamin D and should take vitamin D supplements.