Sunday, March 14, 2010

Habitat Damage and its consequences

The rapid increase in the population leads to a damage for more houses and industries and the need for food requires more acres of cropland to be cultivated. Finding land for the uses often means replacement of wild habitats with human made environments.
The agricultural land covers about 9 million square miles of the world’s land surface which represents nearly all of the land on our planet that is easily cultivated, because ice, mountains and deserts account for the large percentage of the earth’s surface. Much of the farmland currently under cultivation is being damaged as farmers try to squeeze more of the crops out of the soil. Which means that the soil may not be fertile in future, creating the need for new farmland? This is likely to put increasing pressure on the world’s remaining wilderness.
Many other types of development demand land. Road, industry, mines and dams all need land and their construction often means disappearance of some habitats and the disruption of the others.
Although population growth in the richer countries of the world is low but the people in these countries use far more resources than those in the poor countries. Extracting resources damages the habitats. The copper taken from this mine in Utah will go to make wire or pipes, but the mountain will never be the same. Vast amounts of rocks are destroyed, disrupting the area’s wildlife.
Overgrazing of cattle in the dry grassland south of the Sahara Desert is habitat damage. Plants help to recycle rainfall by giving off moisture from their leaves. When the vegetation is stripped away, the region becomes drier. Millions of people are affected by drought in this part of Africa and wild animals like Cheetah, Gazelles and Antelope which used to roam here have lost their habitat due to the rapid population explosion in the world.

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