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weather

natural selections and biomes

TermDefinition
tundra The coldest of all the biomes. It is located in the arctic circle. Winter temps are around -50 degrees fahrenheit.
taiga located near the top of the world, just below the tundra biome. The winters are very cold with only snowfall. The summers are warm, rainy, and humid
deciduous forest found in the eastern half of North America, and the middle of Europe. The average annual temperature is 50° F. The average rainfall is 30 to 60 inches a year.
rainforest a forest of tall trees in a region of year-round warmth. An average of 50 to 260 inches of rain falls yearly. Belongs to the tropical wet climate group. The temperature rarely gets higher than 93 °F (34 °C) or drops below 68 °F
grassland is a region where the average annual precipitation is great enough to support rolling terrains of grass, and in some areas a few trees.
desert warm throughout the fall and spring seasons and very hot during the summer. the winters usually have very little if any rainfall. Animals are usually nocturnal carnivores.
terrestrial Pertaining to land or Earth. Living on land.
weather the state of the atmosphere with respect to heat or cold, wetness or dryness, calm or storm, clearness or cloudiness.
climate the weather conditions prevailing in an area in general or over a long period.
trophosphere the lowest densest part of the earth's atmosphere in which most weather changes occur and temperature generally decreases rapidly with altitude and which extends from the earth's surface to the bottom of the stratosphere at about 7 miles
stratosphere the layer of the earth's atmosphere above the troposphere, extending to about 32 miles (50 km) above the earth's surface (the lower boundary of the mesosphere).
mesosphere the region of the earth's atmosphere above the stratosphere and below the thermosphere, between about 30 and 50 miles (50 and 80 km) in altitude.
thermosphere the region of the atmosphere above the mesosphere and below the height at which the atmosphere ceases to have the properties of a continuous medium. The thermosphere is characterized throughout by an increase in temperature with height.
jet stream a narrow variable band of very strong predominantly westerly air currents encircling the globe several miles above the earth. There are typically two or three jet streams in each of the northern and southern hemispheres.
atmosphere the envelope of gases surrounding the earth or another planet.
 

 



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