Energy is the ability to do work.
I believe the answer is C. an increase in the number of cold climates
Answer:
b. when the body converts a nutrient to another substance, there is no effect on mass balance.
Explanation:
The law of mass balance states that the mass stays the same in any chemical reaction, that is the reason why a nutrient in human body transforms to another substance like another substance, into muscles (that has mass), a body fluid ( that has mass) or another substance, but the total mass will keep the same, just in a different shape, nature or state.