A scientist rubs an unknown mineral against samples of calcite and apatite. The mineral leaves a scratch on both samples. Which of the following is the unknown mineral? (A)fluorite (B)apatite (C)calcite (D)gypsum

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

her next move would be to use agarose gel electrophoresis to separate the dna molecules of varying length and create a dna fingerprint.