Apes test unit 5 test

Which of the following is an environmental problem associated with abandoned coal mines?

Acid drainage due to leaching of spoil heaps by rainwater

Which of the following accurately describes a benefit of concentrated animal feeding operations (CAFOs) ?

Concentrated animal feeding operations are efficient and relatively low-cost facilities that help keep consumer costs low.

At the current rate of growth, Earth's human population will double in about 50 years. Which of the following is ti LEAST viable strategy for ensuring adequate nutrition for a population of this size?

Doubling the area of arable land on a global basis

Which of the following is a disadvantage associated with the genetic modification of crops?

Genetic modifications can decrease the genetic diversity of crop species

Which of the following strategies could be used to reduce soil erosion during surface mining of coal?

Replanting vegetation

Coal was surface mined from five sites, labeled 1 through 5, that had originally been covered by forest. Each site was planted with a mix of tree seedlings to reclaim the area to forest. Grass was also seeded over each site to prevent initial erosion and to provide forage. Ten years after planting, information was collected at the five sites and is given in the table below. Select the letter of the row that indicates the site with the most successful forest reclamation.

Row E

Which of the following best achieves the goal of providing wood products for humans while preserving biodiversity?

Selective cutting of large areas of old-growth forest

Biological controls are frequently used to replace persistent chemical pesticides. Which of the following represents the greatest potential risk of using biological controls?

The control agent attacks not only its intended target but also beneficial species.

Which of the following best describes acid mine drainage?

The leakage of water containing toxic materials from coal and metal mines

Compared with people in developing countries, people in industrialized countries are more likely to eat

beef

Overgrazing of grasslands can lead to reduced range quality. Two of the major effects of overgrazing are

erosion and desertification

As urbanization increases and natural soil surfaces are covered, the groundwater supply is reduced due to

loss of recharge area

Overuse of groundwater in coastal areas would most likely result in which of the following?

saltwater intrusion

Which of the following problems is best addressed with contour plowing?

soil erosion

Environmentalists oppose the mining of antarctic mineral resources because

the antarctic environment is fragile and extremely vulnerable to the disturbance that would accompany development