Please help I’ll give brainlist if right

47

explanation:

ok

your answer is "the 1950's"

because they are eaten by the frog and the frog getseaten by the snake and the snake by the eagle

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