Answer:
Newton's first law of motion states that there must be a cause which is a net external force for there to be any change in velocity, either a change in magnitude or direction.
The countercurrent heat exchanger that prevents arterial blood from overheating the testes is the pampiniform plexus of veins. The pampiniform plexus helps to regulate testicular temperature, allowing sperm maturation. It surrounds the testicular arteries and works as a countercurrent heat-exchanger system to cool the arterial blood before entering the testes. This is because the sperms can not develop if the testis is at body temperature.
Answer:
No.
Explanation:
Some organelles are found only in some cell types.
Answer:
c. comparing quantity totals
Solar energy heats water on earth, causing it to change to charges states from liquid to vapor. Gravity causes water to flow over the earth's surface and into the ground