Because if a cactus didn't have needles a lot of animals wouldn't get poked and they'd eat it
Answer:
proteins
Explanation:
They have many functions:
-internal and external support
-helps repairing cells
-has a role in transporting materials ex:hemoglobin
i would say coal because coal is found by mining which does not involve the sun's energy
<span>Assuming that this is referring to the same list of options that was posted before with this question, <span>the correct response would be the one having to do with the idea that one specific entity within the biome is responsible for its evolution, since all entities "work together" to create a specific biome. </span></span>
