Answer:
C. Liver cells being generated by air
Explanation:
This statement would be an example of abiogenesis, or spontaneous generation (which is proven to be impossible). Cells can not appear out of "thin air" (if you know what I mean haha. Hope this helps!
Answer:
21
Explanation:
Amino acids are the basic structural units of proteins. Our bodies contain 21 amino acids it uses to make all proteins, although books recognize only 20 amino acids. The 20 amino acids are the alphabet of proteins.
THe population will become a separate species over time. This is speciation.
As a cell grows, the ___ decreases and the cell must divide or die.
Surface area to volume ratio