Answer:
(c)there is no heat flow between the metal and the oil
Explanation:
oil is not a good conductor of heat
It’s between b and d. I would go with b based on the information below.
The four primary functions of carbohydrates in the body are to provide energy, store energy, build macromolecules, and spare protein and fat for other uses. Simple carbohydrates are quick energy sources, but they do not usually supply any other nutrients or fiber. One of the most important functions of carbohydrates is to form a structure called the glycocalyx. This is a coat around the cell.
They come from the atmosphere, since plants use carbon dioxide to produce carbohydrates :)
