Which of the following is an example of a chemical reaction? A) Metal rusts slowly when it is exposed to water.

B) Water vapor in clouds turns into snow.

C) Salt dissolves in water until it is no longer visible.

Ascientist conducted an experiment and discovered that certain plants grow faster when given a particular amount of fertilizer. anouther scientist conducted the same experiment and got similar results. which concept does this best illustrate? a) repetition b) replication c) precision d) validity