1. They play dead when faced by a predator.
2. They travel in schools of about 12.
3. Males establish their dominance by having sword fights with their spines and showing off their bright colors.
Matter is anything that has mass and occupies space. There are three different states of matter- solid, liquid, and gas.
The mesosphere is the coldest layer of the atmosphere.
Hope that helped you.
May I see the answer choices? If so, then I can help. :)
