Answer:
A chemical reaction happens when substances break apart or combine to form one or more new substances.
Explanation:
hope its right.
B. It is the heat required to change a gram of substance from solid to liquid
The answer would be A. You cannot decrease mass because of increasing temp so it can't be C and adding neutrons or protons would be changing the atom and therefore the element, and that is not possible through just an increase of temperature, so it can't be B or D. Hope this was helpful! ;)
C) can give up electrons more readily than others.
A:Autotrophs
Explanation: Heterotrophs get their energy by eating Autotrophs. Not by photosynthesis.