DESERT BIOME

DESERT :Deserts are areas that receive very little precipitation. Some deserts are very hot, with daytime; other deserts have cold winters or are cold year-round.One thing all deserts have in common is that they are arid, or dry.In all deserts, there is little water available for plants and other organisms.Deserts are found on every continent and cover about one-fifth of Earth’s land area.Some deserts are mountainous. Others are dry expanses of rock, sand, or salt flats.

Hot and Dry Deserts Semi Arid Deserts Coastal Deserts Cold Deserts

TYPES OF DESERTS:

CHARACTERISTICS TEMPERATURE: Temperatures in arid areas may get as high as 55 degrees C during the day and as low as 10 degrees C during the night.RAINFALL AND CLIMATE: The climate of a desert is hot and dry. The amount of rain in the desert varies slightly from desert to desert, but on average, desert rainfall measures about 1 inch per year.ANIMAL LIFE: Although the desert climate is very hot and dry, there is an abundance of animal life. Varieties of lizards, rats, owls, tortoises, antelopes and bobcats are just a few of the many desert dwelling animals that have had to evolve to survive. PLANT LIFE: there are thousands of plants that flourish in a desert biome. The two most numerous are the ocotillo, a flowering plant, and the saguaro cactus.

TUNDRA Tundra are tree less plains. Tundra is the coldest of all the biomes.

CHARACTERISTICS:Extremely cold climate Low biotic diversity Simple vegetation structure Limitation of drainage Short season of growth and reproduction Energy and nutrients in the form of dead organic material

ECONOMIC POINT OF VIEW:Human economic activity has been scarce on tundra.Occasional mineral resources, such as fossil fuel and ores occasionally appear in tundra.

ANIMALS

PLANTS

Arctic FoxGrizzly BearMusk OxPolar BearSnowy Owl

 Arctic MossArctic WillowBearberryDiamond-leaf WillowLabrador Tea