These narrow tubes carry urine from the kidneys to the bladder. Muscles in the ureter walls continually tighten and relax forcing urine downward, away from the kidneys. If urine backs up, or is allowed to stand still, a kidney infection can develop.

Explanation:

6 0

3 years ago

How does energy change when an ATP molecule is converted to ADP and a phosphate?

Maurinko [17]

ATP contains more energy than ADP.

4 0

3 years ago

Use the following study to answer the following question: A researcher applies varying amounts of fertilizer (0, 2, 4, 8, 10 uni

Ksenya-84 [330]

I believe the answer is the weight of each tomato.

This is because the weight of each tomato depends on the amount of fertilizer (the independent variable/the thing being changed) added to each plant.

8 0

3 years ago