B. the oceans is the largest ecosystem.
Answer:
The body uses fat as a fuel source.
Explanation:
The body eats it when youhave lack of food.
True, DNA is DNA, it matters not wether or not it belongs to a plant, you could mix a carrot with a pig (not sure why you would, but you can)
Respiratory- You breath faster to help supply the muscles with more oxygen.
Integumentary (skin) - Sweat helps cool down the body.
