Human Use Of Land

Clear-cutting logging would be more likely to necessitate reforestation afterwards than selective cutting. Clear-cutting removes all trees in an area and results in more significant environmental damage, making it more difficult for the trees to regrow naturally. With selective cutting only some of the trees are harvested, so the overall ecosystem is preserved which makes it more likely that trees will be able to regrow naturally.

D.

Deforestation in Africa as a result of logging for agriculture and human settlement are destroying the great apes' native habitats. Every year over 13,000 square kilometers of forest is being cleared which may lead to the extinction of Africa's great apes within 20 years

D.

A.

C.

Chemical pest control methods like pesticides are often toxic to many plants and animals and can be pollutants in the environment. Biological control methods, however, make use of natural methods of controlling pests that do not generally pollute or harm other organisms in the environment.

Clear-cutting removes all the trees in an area, leaving none behind to provide cover for delicate topsoil or homes for wildlife. This in turn leads to soil erosion and the destruction of soil fertility as well as removing the trees needed to produce seeds for natural forest growth to proceed. Clear-cutting also forces animals to seek out new homes and forces populations out of their native territory.

A.

Sometimes when humans manipulate their environment consequences other than those predicted also occur. These unexpected and unintended consequences are generally negative, such as happened with the green revolution where the overuse of fertilizer eventually led to lower crop yields. Specifically, unexpected consequences can refer to consequences that were not intended to occur as a result of the environmental manipulation.