Carbon dioxide, methane, water vapor, and a few other atmospheric gases trap heat energy and maintain earths temperature range
<span>Alfred Wegener first proposed the theory
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Answer:
71 percent. hope this helps
Explanation:
Answer:
I believe the correct answer is both involve proteins in the cell membrane.
Explanation:
This is because Facilitated diffusion does not require any energy to transport molecules, while Active transport requires ATP. Facilitated diffusion transports molecules from an area of higher concentration to an area of lower concentration (or down a concentration gradient). Active transport moves molecules from an area of lower concentration to an area of higher concentration (or up a concentration gradient). Answer choice A is the only choice that makes sense.
Hope this helps,
♥<em>A.W.E.</em><u><em>S.W.A.N.</em></u>♥
Answer:
B
Explanation:
competing with stronger organisms makes it difficult for the squirrel to be invasive
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