The blood has low oxygen content
Answer:
Nitrogen containing waste consist or urea, ammonia, uric acid and creatinine, which is eliminated as urine by the kidney.
Explanation:
Nitrogenous waste is a by product of protein metabolism that takes place in the liver. It is transported to the kidney where its filtered by the nephron and excreted in form of urine in mammals, uric acid in reptiles.
Answer:
B
Explanation:
The do vary in size and temperature because as the layers go down to the core it gets harder and magma is more present
I believe the answer is "<span>A canyon can be cut by the flow of a river if it flows in one path for a long enough time". </span>
