Which of the following is an example of how people modify the environment in africa? i. cutting down trees in order to plant crops or build homes ii. building a dam on a river iii. allowing herd animals to graze on native grasses a. i. only b. ii. only c. ii. and iii. only d. i., ii., and iii.

D. i., ii., and iii.

Explanation:

Africa, in general, is a continent where the nations fall into the category of developing nations. Unfortunately, this also means that in order to make some profit the well being of the environment is not taken into consideration, which has very negative effects.

In order to make plantations, the Africans tend to cut down or burn down the forests. While this is opening up land for plantations, on the long run is not functioning, as the soil from the forests are eroding very quickly, so after few years they are no good for planting crops on them. The process them continues and more forests are destroyed, with the end result being barren land. The same goes when it comes to building houses. Even though the ground where the forests are is usually not the best one and most stable one, the trees are destroyed and homes are built on their places.

The building of dams on the river is another modification of the environment. This has lot of positives, as the dams manage to provide irrigation water, stop floods, and produce electricity. The negative aspect is that the aquatic organisms are badly affected and their population decrease.

Lot of people in Africa still practice primitive way of herding. With the population growth though, more and more food is needed, so there is more and more cattle as well. The cattle needs food, and often it is let to graze on the grasslands, resulting in depleting the food sources for the wild animals.

D is the right answer

Explanation:

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hi there,

on december 11, 2001, china officially became the 143rd member of the

world trade organization (wto) in the culmination of a negotiation

process which began in 1986. economists have long been debating the

global effects of china's accession to the wto, and as china becomes

fully integrated into the organization over the next several years,

the accuracy of their predictions will be tested.

one of the biggest residual effects of china's entry to the wto,

according to economists, will be the relocation of manufacturing and

distribution centers to china. due to its cheap labor, cheap

industrial land, and educated workforce, china is an ideal production

centre for businesses based in outside countries. this will likely

result in a twofold impact – more jobs will be available in china,

while countries like india, which have historically offered cheap

labor, will suffer. taiwan and malaysia's technology industries are

already suffering as companies like dell computers move production to

china, and while foreign investment soars in china, other asian

countries suffer. in addition, mexico and the caribbean will lose

thousands of garment manufacturing jobs as the u.s. lifts restraints

on chinese textile imports.

while the impact on southeast asia may be negative, the western world

may benefit. while some suggest china's open borders will result in

increased competition and a decreased employment rate for the western

world, western countries will benefit from access to china's highly

developed electronics and industry sectors. with duties and quotas

slashed, and restrictions lifted, multinationals will benefit by

setting up distribution centers without the need for chinese

middlemen. in addition, it's expected that china will import massive

amounts of food products, machinery and vehicles from the u.s., japan,

hong kong, taiwan, singapore and south korea, thus providing

significant boosts to these countries' economies.

in conclusion, it seems that while western countries may benefit from

china's accession to the wto, there's the potential that asian and

south american countries may feel the pinch of free trade as china

moves to a global economy.