Fredrick is doing a lab on ph. he uses many household items to determine the ph of his items. which of his actions best describes inappropriate lab safety?
he changes into closed-toed shoes before lab starts.
he doesn’t wear goggles because he is using household chemicals.
he asks his teacher if he can mix high- and low-ph solutions before discarding them.
he leaves his workstation to identify all of the safety equipment in the lab.

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