Why does a nail stick to a magnet?

A) The nail is a magnet.
B) The nail contains some iron.
C) The nail weighs less than the magnet.
D) The nail is the same color as the magnet.

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

some inherited genetic mutations can be good for the offspring, so the answer is different genetic mutations cause many forms of cancer.