If a sea star is cut in half, it can regrow the missing part of its body through

Explanation:

Most species of sea stars must split part of their central disc along with a limb for regeneration to occur. It is very unlikely that a severed limb will be able to regenerate into a full-grown starfish unless it is already attached to at least a portion of the central disc.

not only is it colder, it also becomes darker, less salty, and more dense.

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:

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