Fragments of metal or rock which enter the Earth's atmosphere from space are called: Meteorites
Meteoroids
Meteors

meteoroid- hope this helped have a good day!!

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:

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