Achange in population of one organism results of the increase in grasshopper population decrease in grass population change could have caused these changes

An animal that eats grasshoppers

Explanation:

It's population must have reduced and then the grasshoppers population must have increased.

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a covalent bond, specfically triple bond

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.