An enormous cloud of gas and dust that contracts due to gravity and forms stars is a a. nebula b. galaxy c. constellation d. meteoroid

An enormous cloud of gas and dust that contracts due to gravity and forms stars is called a nebula.

the answer is A. nebula

B. makes no sense. A galaxy is a large grouping of solar systems.

C. Constellation. is wrong. a constellation is a pattern of stars that are visible from the surface of the Earth.

D. meteoroid. is also wrong. Meteoroids are large, pieces of rock that are floating in space that have no life, and contain numerous minerals.

hello

answer: collecting information/data

reason: the student is going around and asking people questions to collect data

i hope this

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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