complete the following sentence correctly.
in an experiment, there should be independent variable(s) and dependent variable(s).
a.) zero; one
b.) one; one
c.) one; two
d.) two, one

Match each term to its scientific definition. a)natural world b)scientific method c)theory 1) everything that can be observed or explained scientifically 2) a well-supported explanation of all the evidence related to a natural phenomenon 3) the procedure of scientific inquiry used to investigate natural phenomena