As you workout your heart rate will increase because you need oxygen.
Answer:The hypothesis that eukaryotic cells evolved from a symbiotic association of prokaryotes—endosymbiosis—is particularly well supported by studies of mitochondria and chloroplasts, which are thought to have evolved from bacteria living in large cells.
Explanation:
The reptile is evolving over millions of years.
some one celled organisms reproduces by binary fission which is a process of cell division. The answer is 4.
