Cell, tissue, organ, organ system, organism if that’s what you are referring to
They train our immune system so it's ready when our bodies are attacked, and they aid in digestion and supply us with vitamins. ... Scientists and doctors can even utilize prokaryotes to help the human body.
Answer:
If your blood pH levels aren't regulated then your blood will be like acid and potentially be fatal.
Explanation:
Your body tries to maintain homeostasis so regulating blood pH levels is vital.
The lizards have to adapt to the environment to survive. The lizards may have always ate flies/lizards but once they reached the environment that produced opposite of their eating habits, they altered their eating habits. The lizards' adaptation will give them the ability to survive within the said environment that produce certain foods.
