Plants growing on sand and gravel are called

How many major biomes are there on Earth in terms of average annual temperature and precipitation?

Which feature of an elephant suggests that it is an animal of a hot climate?

Identify the organism based on the following characteristics:
- It has the ability to concentrate its urine.
- It meets its water requirements from internal fat oxidation.
- It is found in the American desert.

Large size of pinnae in animals of warm regions in comparison to animals of cold regions is due to:

Chaparral occurs in which area?