Which of these describes a way in which humans could increase biodiversity in a marine ecosystem. 1. They could introduce new species to the ecosystem. 2. They could limit fishing to only one kind of fish in the ecosystem. 3.. they could ban boating, snorkeling, and scuba diving in the ecosystem. 4. They could restrict the amount of each type of fish or shellfish harvested from the ecosystem.

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