The human brain is the most complex organ in the human body
Wouldn't it be water vapor? Don't quote me on this, but I think when water Molecules (H2O) heat up, they expand away from each other and become gas.
Anthropods have exoskeletons
Answer:
A temperature difference causes particles to move, creating a current. The current transfers heat from areas of high energy to those of lower energy. In gases and plasma, a temperature difference also leads to regions of higher and lower density, where atoms and molecules move to fill in areas of low pressure.
Explanation:
I believe it would be D, since the animals that had more food, and a advantage, would produce and so on.