Which biome, typical of africa, is home to many grazing animals?
a) desert
b) savanna
c) taiga
d) tundra

In which state was more than 100 billion tons of coal mined in 2005?

The “ecological footprint” left by a citizen of a developed nation is about four times larger than that left by a citizen of a developing nation. why is this the case?

Body temperature is tightly regulated in mammals for example when external temperatures drop too much the body of a mammal response by in order to it's core temperature.