When the sea otters population declined, the kelp beds where eaten rapidly by sea urchins, removing most of the kelp. This is because: * 1 point
the carrying capacity for sea urchins had not yet been reached
the carrying capacity for sea urchins had been reached
the sea urchins were a keystone species
kelp was not important in this ecosystem

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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

the correct answer to this question is #5