Answer:
3 kg is greater than 3000 mg and 250 cg
A signaling pathway would need to be regulated because of efficiency, to make what you need when you need it.
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Answer:
Producers are capable of photosynthesis, a process by which they covert light energy into chemical energy, while consumers use respiration. Producers generate complex organic molecules, while consumers break them down into simpler ones (say, sugars to carbon dioxide, etc.).
Explanation:
D. All blood vessels contain an inner connective tissue layer.
