Answer:
The answer is if the niches of two organisms were moved to the other ecosystem they would compete with one another for the same food and other resources in the environment. Eventually, one species would be likely to outcompete and replace the other.
With what?
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Answer: B:The drought decreased the grass and vegetation on the ground, leaving only vegetation on shrubs and trees above the ground. Natural selection selected for the tortoises with the domed shells and hoods.
Explanation:
The answer is D. Food Threshold is the amount of food capable on feeding the organisms.