This is extremely vague, but assuming this is regarding concentration gradient in the nervous system, the Sodium-Potassium pump is responsible for transporting sodium and potassium.
Answer:
A
Explanation:
The respiratory system allows for gas exchange, water and heat balance, and creation of sound and speech. I just took quiz and this 1 was right.
Gray cannot blend. Dark rocks let black fur blend in. White sones can blend with white fur. Gray would stick out and then not survive. Population of black and white would go up, and then the gray would go down.
Answer:
d
Explanation:
absorption of digested food
The way you determine this is by looking at what made the offspring and what it could turn into
