At the end of the exercise, which trait allowed you to more easily tell which birds belonged to the same species? (The species name is not a trait!)

Birds with the same shaped beaks

Explanation:

since I'm assuming you're referring to finches, the species of finch is determined by the type of beak that they have which is related to their diet.

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