How does the nitrogen cycle effect the desert ecosystem?

Answer 1

Deserts can be hot or cold so the main reason they occur is aridity, or lack of rainfall/snowfall. Antarctica is a cold desert, the Sahara is a hot desert (at least by day). Deserts in the American Southwest are mostly caused by topography--the Sierra Nevada mountains that cut off rain clouds from heading inland (most of the time). Deserts can also be caused by cold ocean currents that run along land such as in western Mexico, Chile, Peru, etc. The Sahara was mostly caused by a tilt in the Earth's axis that put it in a high pressure zone, it used to be a green savanna with flowing rivers several thousand years ago. Some deserts get monsoons, or torrential sudden rains that are tropical, this occurs in the American Southwest as well as parts of India where it can be dry the rest of the year. Other deserts such as the high altitude Atacama desert in Chile receives essential no rainfall...some areas along the coast get fog or mist and certain cacti and mosses or lichens will grow there and sustain animal life. Because of the lack of moisture in the air, temperature extremes can occur with daytime temperatures getting quite hot and nighttime quite cold, even down to freezing temperatures depending on the region. In the American Southwest, the deserts actually receive a decent amount of rain, but it usually comes during the summer and is sporadic, plants have to adapt by storing water or growing and reproducing quickly such as occurs with desert wild flowers and grasses there. Cacti either absorb the water and "plump" up and/or grow leaves, flowers,fruit/seeds and lose them when it dries out again.

Answer 2

1. Arid Environment

   • Lack of water prevents a desert from supporting much plant and animal life, although some species thrive in this environment. Burgeoning human populations on the edges of the desert strain the water supply, which affects the already sparse flora and fauna.

   Desertification

   • Desertification is the process in which once usable land becomes inhospitable and loses its ability to sustain life, essentially becoming unusable. Desertification is growing due to misuse of land resources, such as over-farming and over-grazing.

   Human Activity

   • Though droughts trigger desertification, human activity is the largest cause, reports the United Nations. Over-cultivation, poorly drained irrigation systems, mismanagement of available water, digging for fossil fuels and introduction of invasive species are only some of the environmental problems in desert biomes created by humans.

Answer 3

polllution affects habitats because some animals can confuse them for food and culd die, and also some pollution can not break down, which makes matters worse

Answer 4

Pollution affects the desert biome in various ways. This will affect the plants and animals in the desert when processes like drilling wells are done.

Answer 5

it kills animals trees all different things.

Answer 6

Desertification causes water scarcity. No water comes by the process of water cycle in such areas.

Answer 7

Same as all the other ones...

Answer 8

hey