If a substance is not able to be separated by physical means but is able to be separated by chemical means, it is a compound.
We live now in an eon of 542 million years in which abundant animal and plant life has existed. It is the Phanerozoic eon. Therefore, the correct answer is B. Phanerozoic.
here are the structures i hope it helps
Answer:
primary, secondary, tertiary, and quaternary.
The principal advantage of asexual reproduction is that the organism does not have to waste time or energy looking for a mate.