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Tundra comes from the Finnish word tunturi, meaning treeless plain.

here are many different types of rain forests. They can grow on mountains, seacoasts, plains, or in river valleys. How are they different from each other? One difference is how much rain falls in a year. Another is the average temperature. The plants and animals which live in each type of rain forest can be different too.

Tropical means close to the equator. The equator is an imaginary belt which circles the earth and divides it into two halves. Near the equator, the sun shines directly on the earth. The areas directly above and below the equator are called the tropics and are always warm and humid, much like summertime.

Sahara Desert Plants The Sahara Desert is often described as a bleak and barren plain. In truth, it is very beautiful and full of different Sahara Desert plants. Sahara Desert Plants Among desert areas throughout the Earth, there are two types. The cold type of desert, which is often found in Arctic regions, is an area that gets very little precipitation. The cold desert can be covered in snow, however, and the temperatures here are chilly and unsuitable for sustaining many life forms. The other type of desert is known as the hot desert, and this is what people usually think of when they picture a desert area. This type of desert is extremely warm and dry, with temperatures reaching unbearable levels, and little to no rain to sustain those who live here. The biggest of the hot deserts is the Sahara Desert, located in Africa. Although this desert is not the most hospitable place for organisms to take up residence, the Sahara Desert plants defy the odds and thrive here.