4. The variety of life in the world or a particular habitat.
6. The chopping down and removal of trees to clear an area of forest.
7. A type of agriculture producing food and materials for the benefit only of the farmer and his family.
9. The business of cutting down trees and transporting the logs to sawmills.
10. The removal of solid mineral resources from the earth. These resources include ores, which contain commercially valuable amounts of metals, such as iron and aluminium; precious stones, such as diamonds; building stones, such as granite; and solid fuels, such as coal and oil shale.
11. Actions and forms of progress that meet the needs of the present without reducing the ability of future generations to meet their needs.
1. The cutting out of trees which are mature or inferior, to encourage the growth of the remaining trees in a forest or wood.
2. Removal of topsoil faster than it can be replaced, due to natural (water and wind action), animal, and human activity. Topsoil is the top layer of soil and is the most fertile because it contains the most organic, nutrient-rich materials.
3. Responsible travel to natural areas that conserves the environment, sustains the wellbeing of the local people and may involve education. It is usually carried out in small groups and has minimal impact on the local ecosystem.
5. Countries are relieved of some of their debt in return for protecting their rainforests.
8. Farming to sell produce for a profit to retailers or food processing companies.