Question

The activity of the kidneys is controlled by hormones and by the
a.
volume of nutrients.
c.
composition of the blood.
b.
volume of filtrate.
d.
composition of the urine.

Answer 1

@MaimiGirl

Answer 2

C composition of the blood.

Answer 3

The respiratory system is responsible for the exchange of gases that allows the body to perform important functions. How does oxygen diffuse within the lungs?

a.
It diffuses from the capillaries into the veins.
c.
It diffuses from the alveoli into the blood.
b.
It diffuses from the arteries into the capillaries.
d.
It diffuses from the blood into the alveoli.

Answer 4

i guess i knew only that one

Answer 5

okay thanks

Answer 6

welcome