She was running harder than she usually does, so she worked up a sweat.
Her body needed to burn food more quickly to get energy to run hard.
Her body needed to use more heat energy
Fusion and gravity
Fusion and gravity keep the sun from blowing itself up. A large amount of energy is released by the
sun. Protons are fused together to form helium atoms due to the high heat and
pressure at the center of the sun. The Sun does not blow itself up from the
outer pressure of nuclear fusion in as much as the inner force of gravity
balances it.
1) A
2) B
3) C
4) D
5) E
6) F
7) G
8) H
The answers are already in the picture.
