From what I know its that he learned <span>the moon is very small and has large variations in its surface temperature.</span>
The correct choice is increases your heart rate and respiration.
Your sympathetic nervous system increases your heart rate and respiration when confronted with a stressful event.
sympathetic nervous system also mobilizes body for action, increases breathing and sweating, makes pupils dilated ad lastly decreases stomach's activity.
I'm not sure I'm sure some one will text u
Fusion is the joining of two or more things.
Fission is the splitting apart.
So really you read the question and look for the clues and you determine which one it could be.
