AP Env Unit 5 Part 3

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overgrazing of grasslands can lead to...

- reduced range quality - erosion & desertification

Why has aquaculture grown considerably in several parts of the world?

Aquaculture fisheries provide a larger and more consistent quantity of fish year-round than do wild fisheries

What is a direct economic advantage associated with aquaculture?

Aquaculture produces large amounts of seafood for human purchase and consumption year-round

_____ is a greenhouse gas produced by domestic livestock

CH4

_____ is an unintended environmental consequence of aquaculture

Contamination of surrounding water by organic waste

What best describes a disadvantage of using genetically engineered crops over crops that are not genetically modified?

Genetically engineered plants can decrease the genetic diversity of the crop

What is a disadvantage associated with the genetic modification of crops?

Genetically modifications can decrease the genetic diversity of crop species

_________ is the best example of an economic incentive that could be used to improve environmental quality and reduce resource waste.

Providing tax breaks for companies that use recycled materials

_________ is the most likely unintended consequence of using pesticides in agriculture.

The continual use of pesticides can cause organisms to build a resistance through genetic mutation that then requires more or stronger pesticides

What represents the greatest potential risk of using biological controls?

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

What is the best example of an economic approach to reduce overfishing for a fish species with a declining population?

The federal government sets a catch limit (per person or per boat) for the species and imposes a tax on any extra fish that are caught

What is acid mine drainage?

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

What best describes the process "mountaintop removal"?

The use of heavy equipment to move overburden downhill during the strip mining of coal

Biological control methods for managing insect pests are effective because...

They generally focus on one target insect to ensure that the target insect population remains low and can lead to a self-perpetuating population of a control species

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

beef

The major cause for the decline in the worldwide catch of fish since 1990 is ___________

overfishing

______ could be used to reduce soil erosion during surface mining of coal

replanting vegetation

Use of Integrated Pest Management techniques is the most successful method because...

the sources for food, water, and shelter for pests are disrupted, leading to a reduced number of pests in the area

What is a mechanical method for reducing pests?

use of screens or traps

A sustainable society would emphasize...

using energy efficiently and reusing and recycling matter


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