How are prokaryotic and eukaryotic different

After hydrogen and oxygen, witch element makes up almost all of the most common substance in your body

Explain how ancient whale fossils found in eqypt are believed to support the theory of evolution.

Internal feedback works to maintain homeostasis when your a. heart rate decreases as your white blood cells increase b. breathing rate decreases as your red blood cells decrease c. heart rate increases as your liver is cleaning blood d. breathing rate increases as your heart rate increases