Answer:
Explanation:competition. A common demand by two or more organisms upon a limited supply of a resource; for example, food, water, light, space, mates, nesting sites. ...
coevolution. ...
ecological niche. ...
mutualism. ...
predation. ...
parasitism. ...
Realized niche. ...
Fundamental niche.
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Answer: The rule of the land under which the United States is governed only by the national government It is the shared power and duties of the federal and state government. i think ill give u a definaion that i find that will help
Explanation: is a system of government in which entities such as states or provinces share power with a national government.