D because all your veins ate nearly in your heart and if your heart stops they stop too
Answer: Young rivers are channels that are deeper than they are wide, have a very fast flow, and contain frequent waterfalls and rapids
Answer:
Its B I think (I'm not 100% sure)
Explanation:
Endocrine system regulation slowly happens but produces long-lasting effects, whereas nervous system regulation quickly takes place with short-term effects.
Endocrine system can regulate many things in the body that control the metabolism. The effect shouldn't be instant, but it should be good for long term effect. Nervous system need a much faster reaction because it responsible for "fight or flight" reaction. A slow nervous system will cause the organism caught by predator easier.