ANSWER ASAP Ground water can flow deep into an underground layer of rock called a(n)————that can store water for a long time .

a. aqueduct
b. gene pool
c. aquifer
d. sanctuary

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 tricuspid valve is present between right atrium and right ventricle

just finished the test, the answer is d, greg is the least cost-effective because he charges the most for the project