A. similar animals fossils found in South America and Africa
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Proteins have many important roles in cell function like structural support, biocatalysts, receptors.
Answer:
When one thing dies, or is taken away from the food web, then this could happen:
Let's say plants are taken away. Then, herbivores have nothing to eat, sot hey die. Then, carnivores have nothing to eat, and the same thing happens, etc.
Plants are the base of survival for every organism in nearly every ecosystem.