An ecosystem is most likely to return to its original condition after which of these occurs? a new predators are introduced to control a pest population. b a marsh is filled in to make space for a new parking lot. c tall prairie grass burns after being struck by lightning. d flood waters erode the banks of a narrow stream.

a new predators are introduced to control a pest population.

Explanation:

An ecosystem is a biotic community in which the living beings interact with their non-living physical environment and among themselves so as to sustain their lives.

Among the options given the ecosystem is most likely to return to its' original condition after pest infestation when new predators are introduce to control these pests. The ecosystem will come back to the stable state after the pests are irradicated.

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a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u