Answer:
1.true2.true3.true
Explanation:
sorry not sure about this answer
I think that the plains, because the temp. is the same all around, cuz its flat... the mountains get cold at the top
I am thinking it is by heating themselves in sunlight. I think this because when I bring lizards to mind, they are cold blooded, and they need sunlight to bath in so they do not start to lack warmth to live.
I hope this helps.