Which describes why radioisotopes can be used as tracers in studying the biological and chemical processes of plants?
a-the radioisotope is chemically identical to the nonradioisotope the plant normally uses.
b-the radioisotope is absorbed more quickly than the nonradioisotope the plant normally uses.
c-the radioisotope converts the nonradioisotope normally used by a plant into a radioisotope.
d-the radioisotope travels through the plant without participating in any chemical processes.