By Sublimation, you can separate salt water from sand !!
and by Evaporation, salt can be separated from water !!
so all three are separated by these two process !!
The answer is D. The question asks how different cultures influenced each other so that rules out options A & B. Option C is about the environment being destroyed, and that really has nothing to do with foreign influence.
It is false, temperatures in the tundra do not get extremely high
Changes in the orbit of the earth caused the ice sheets to spread across Canada.
