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Thursday, February 28, 2013

Invasive Species

First of all

Q: What is an invasive or invasive alien species (IAS)?
issue: An invasive species or an invasive alien species is defined as a nominate, animal or pathogen that is not native to an area, and whose cosmos does or is likely to change economic or environmental of this place

What you think about the invasive species? It is a benefit or the harmful?

Before 1863, Australia is a place with full of fleeceable grass. A famous case of invasive species is the Australia rabbit, because of the accidently bring 16 rabbits to the Australia; rabbit population is increasing too fast without every limit. Now day you will find Australia has become the castigate place from the disaster of rabbits in the world.

1, ????????????????????????????????????????

Introduction of new species of humans development provides a number of conditions and opportunities for countries and regions of the world to create a large economic benefit

Such as some plant and animals as some specie which is used to visional.

2. ???????, ???

As a forage or feed, food.
Example?potato as a staple food enter into the china.

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In the seventeenth century, the potato spread to China, because the potato is very low for penetrate yield in the original, only the growth of the growth of rude(a) oats in the alpine region, and soon in Inner Mongolia, Hebei, Shanxi, Federal Shaanxi, universal, potatoes and corn, sweet potatoes and other high-yielding crops introduced from the Americas to become the poor class of the significant food, the maintenance of the rapid increase of Chinas population has played an important role.

3. ??????????????????~??????????.

Introduced species can pick up some disadvantage species in this environment which is to increase the stability of ecosystem.

For example, Australia have many direct and cow, those animals will produce a large amount of...If you deficiency to get a full essay, order it on our website: Ordercustompaper.com



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