AP Env Unit 5 Part 3
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