Question 3 The concept of environmental sustainability is best explained by which of the following examples?
A
Strip-mining of coal on mountainsides, to keep miners from working in underground conditions
Terracing rice paddies on hillsides, to prevent soil erosion and provide gravity-fed irrigation
Clear-cutting trees in coastal woodlands, to provide building materials for constructing homes
D
Fattening cattle in dryland feedlots, to practice agriculture efficiently and at the lowest cost
E
Draining of wetlands in residential areas, to reduce the presence of stinging insects