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:

I just took the quiz

reflecting point a across the origin negates both of its coordinates.

b = (5, -4)

italy:

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