the answer is A ,i just took the unit test review test
Carbon dioxide is removed from the atmosphere primarily through photosynthesis and enters the terrestrial and oceanic biospheres. Carbon dioxide also dissolves directly from the atmosphere into bodies of water (ocean, lakes, etc.), as well as dissolving in precipitation as raindrops fall through the atmosphere.
Neurons that pick up sensations from receptors and carry them into the brain are sensory neurons.
<span>A broad stream of electron particles brushing upward from the surface of the sun is called a solar flare.
</span><span>The sudden flash of the increased brightness of the sun is a solar flare</span>
Answer:
Scientists extract DNA for many reasons. They use the samples of DNA to test things on. With a pure sample of DNA, you can test a newborn for a genetic disease, analyze forensic evidence, or study a gene involved in cancer.
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