The answer is about 540-490 million years ago.
Nucleic acid because nucleic acid deals with the nucleus and the nucleus has dna which store genetic information
The answer is phagocytosis.
<span>Phagocytosis is a process which amoeba uses to swallow up large fragments of matter, such as mineral particles, dead cells. These swallowed fragments form a phagosome. The phagosome fuses with a lysosome and forms a phagolysosome inside which enzymes break down those fragments.
Phagocytosis is a specific form of endocytosis.</span>
Well, baby's start teething around 3-12 months old, so they should have a few teeth by then.
