on average, which of the following areas receives the least amount of precipitation? the tropical rain forest a cool grassland the tundra a savanna

The oldest seafloor in the atlantic ocean is located closest to the edge of the continents. explain how this age can be used to figure out when north america first began to separate from europe

What processes does carbon cycle through the biosphere?

What empire controlled most of the middle east except for a few years between 1516 and 1917, where was the capital of this empire located and what was the geographic extent of this empire?