Using the pytagorean theorem, whitch of the triangles shown are right trianlges?

What group has historically made up the largest portion of immigrants in mexico?

Plants in the tundra biomes have had to adapt to live long periods of time without a. cool temperatures b. sunlight c. oxygen d. water

Me plzzz what is the ratio of water than falls on land as compared to the amount that falls onto the oceans? what role do clouds play in regulating earth’s energy balance? me plzzz