The answer is d
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Answer:
Energy stems from the sun
Explanation:
Think about it, A plant takes energy from the sun and then a worm eats it soon after a bird eats that worm then when the bird dies its body is fed to fungi or back to plant life. Pretty much the sun is our biggest source of energy
Also The sun is our major source of heat without the sun we would freeze and perish.
Answer: Convergent boundaries occur where the Earth's tectonic plates collide or move toward one another.
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Answer:
Explanation:
Secondary transporters and pumps can transport ions at high rates reaching several thousand ions per second. Other passive membrane transporters like proteins and ion channels are capable of transporting ions at rates of more than one thousand (1000) times as high.
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