A biologist .....they study living things only.
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Answer:
The environment in which these predator/prey species exist has a specific carrying capacity. The prey species has to add the number of prey individuals equal to the number of prey individuals that have been removed by the predator. If they cannot maintain this balance, then both the species will become extinct.
Explanation:
B.plants and water
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Answer:
connective tissue comes in a vast variety of forms, yet they typically have in common 3 characteristic components: cells, large amounts of amorphous ground substance, and protein fibers