Exam 26: Population Growth, Resource Use, and Sustainability

The negative consequences of harvesting a natural resource, such as the soil erosion and sedimentation of a river that occur after a forest is logged, typically are not included in the market price of the resource; these costs are referred to as

Explain how a natural ecosystem 'manages' its nutrients.

Increased pesticide use is one component of efforts toward sustainable farming practices today.

One of the strengths of traditional models of sustainable harvest in fisheries is that they see stocks of fish species as components of a larger ecological system.

The amount of resource harvested per unit time is called the

Ninety percent of our global food supply comes from ________ animals and ________ plants.

Trees harvested for timber require a longer rotation period than trees harvested for paper products.

Some nonrenewable resources may be recycled, which extends the effective lifetime of a resource.

Externalities occur when the actions of one individual affect another individual's well-being, and the relevant costs are reflected in market prices.

Swidden agriculture involves burning, which clears space for crops and produces ash that is high in nutrients.

In some parts of our national forests, forest managers are mandated by the government to sell timber at prices that do not meet the costs of management and harvest.

The technique of adding and comparing costs and benefits at different points in time is referred to as

________ occur when the actions of one individual (or group of individuals)affect another individual's well-being, but the relevant costs (or benefits)are not reflected in market prices.

In ________ cutting, mature single trees or groups of trees scattered through the forest are removed, which produces only small openings or gaps on the forest canopy.

The concept of sustained yield applies to nonrenewable resources.

In forestry, the period of time between harvests of trees at a site is called the

List and describe three examples of sustainable farming practices used today.

Which of the following is an example of a nonrenewable resource?

Distinguish between renewable and nonrenewable resources, and give two examples of each.

Cultural eutrophication refers to the