Pollution caused by spills or leaks of oil and other

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Pollution caused by spills or leaks of oil and other toxic materials may also poison the food and water sources of organisms of the tundra.
MOUNTAINS
The mountain biome is not usually described in other references because a variety of other biomes exist within it (such as grasslands at the base of a mountain, coniferous forest at the center of the mountain, and the tundra found at the top of the mountain). But because some animals are only found on a specific mountain range it is important to recognize the mountains as a biome.
WORLD DISTRIBUTION
High elevations on mountains produce colder climates than at sea level. These colder climates strongly affect the ecosystem of mountains: different elevations have different plants and animals. Because of the less hospitable terrain and climate, mountains tend to be used less for agriculture and more for resource extraction and recreation, such as mountain climbing.
MOUNTAIN FACTSThe highest mountain on Earth is Mount Everest in the Himalayas of Asia, whose summit is 8,849.868 m (29,035 ft) above mean sea level. The highest known mountain on any planet in the Solar System is Olympus Mons.
MOUNTAIN FACTSMountains cover about 20% of the Earth's surface and are found on all continents and in all oceans. The movement of the earth's crust by folding, breaking into large blocks, lifting upwards to form a dome, or cracking due to volcanic activity forms mountain ranges. Although mountain ranges can be formed by the methods described above all share certain characteristics. These include changes in soil, vegetation, climate and elevation all within a matter of a few feet.
PLANT ADAPTATIONSAt high altitudes there is very little CO2, which plants need to carry on photosynthesis. Because of the cold and wind, most plants are small perennial groundcover plants which grow and reproduce slowly. They protect themselves from the cold and wind by hugging the ground. Taller plants or trees would soon get blown over and freeze. When plants die they don't decompose very quickly because of the cold. This makes for poor soil conditions. Most mountain plants can grow in sandy and rocky soil. Plants have also adapted to the dry conditions of the mountains.
MOUNTAIN ANIMALSMountain animals adapt to the cold by hibernating, migrating to lower, warmer areas, or insulating their bodies with layers of fat. Animals will also tend to have shorter legs, tails, and ears, in order to reduce heat loss. These animals also have larger lungs, more blood cells and hemoglobin because of the increase of pressure and lack of oxygen at higher altitudes.
MOUNTAIN THREATSMountains are suffering from logging issues. People are cutting the trees down and this is hurting the plant and animal life in many national parks. Without plant cover, erosion has become a problem as soil runs down the mountain. Mountains have become a big area for tourism, which creates jobs and improves living standards for many people in that area, but there are many disadvantages.

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