Unit 2 ENSC 2000

To lower your own virtual water use, you should ____.

Which of the following is least likely to be effective to protect endangered and threatened species.

In order to protect a stream or lake from excessive inputs of nutrients and pollutants, we must protect its ____.

An old-growth forest is a(n) ____.

Three of the following are ways to grow and harvest trees more sustainably. Choose the one that is the exception.

An approach to estimating fish populations, which accounts for species interactions, is the ___ sustained yield model.

Of the estimated 30,000 plant species that people can eat, only ____ of them supply 90% of the world's food calories.

To reduce the risk of ____, people living in dry climates need to work to reduce overuse of irrigation.

Gray water is ____.

Where does the largest input of solar energy occur?

To produce paper without needing to cut down trees, you could change your source to ____.

The purpose of mitigation banking is to ____.

Providing iron supplementation would be most effective in reducing rates of ____.

The major goal of industrialized agriculture for any crop has been to steadily increase each crop’s ____.

The key role of a honeybee in agriculture is to ____ plants and flowers.

Areas rich in plant species that are found nowhere else and are in great danger of extinction are called ____.

After a mass extinction, what happens to biodiversity rates?

The harmful effects of human activities on aquatic biodiversity and ecysystems could be reversed over the next ____.

The area along streams on which ranchers like to graze their cattle is called the ____.

Biomes are characterized by ____.

Despite their ecological value, the United States has lost more than ____ of its coastal and inland wetlands since 1900.

What is a disadvantage of modern synthetic pesticides?

Plantation agriculture is a form of high-input agriculture that involves growing cash crops and is used in ____.

What percentage of the world’s water supply is liquid freshwater that is available to living organisms?

2/3's of the human population survives by eating one or more of the three grain crops. What are these three grains?

You are walking through a forest with oak and hickory trees, and with a thick litter layer underfoot. What forest type?

The ecosystem services provided by forests worldwide are ____ than can be obtained through logging.

How do the tropical rain forests differ from the temperate deciduous forests?

What is the best example of a major human impact on mountain ecosystems?

The greatest areas of marine biodiversity are located ____.

Fishing for smaller marine species could be reduced if there were less demand for____.

Which plant is an example of why it is important to protect natural populations, than just synthesizing in the lab?

To address chronic malnutrition, it is especially important to provide ____.

What group of animals receives the most protection by the use of wildlife refuges?

The large-scale weather phenomenon that occurs when prevailing winds in the Pacific Ocean weaken, resulting in above ave

Tropical forests in the Amazon basin and other South American countries are primarily being cleared or burned for ____.

Which of these is the most effective as an action that a farmer could take to help to mitigate climate change?

The delta of the Colorado River was destroyed by ____.

Which of the following is true of tree plantations?

To reduce the damaging effects of hurricanes, it is important to protect and restore ____.

Which factor is important in influencing global air circulation as described in the textbook?

According to water resource experts, one of the two major causes of water waste is ____.

One benefit to the use of GMOs is that ____.

An ecosystem approach to sustain aquatic systems would include the establishment of fully protected _____.

Which term describes the temperature, precipitation, and humidity of an area over hours or days?

Water in the spaces between soil, rock, and gravel is called ____.

With traditional subsistence agriculture, farmers increase their crop yields by ____.

Evidence of land subsidence most strongly suggests that ____.

A concentration of an aquatic species suitable for commercial harvesting is called a _____.

According to researchers, the greatest threat to wild species is ____.

Which species would provide the best example to explain the effectiveness of the Endangered Species Act?

Which activity is least likely to be involved with the sustainable management of freshwater fisheries?

Three of the following are ecosystem services of rivers. Select the exception.

A boundary between air masses is called a ____.

To prevent famine at its root, it is most important to develop programs that____.

The traditional approach to estimating fish populations is the ____ sustained yield model.

3 of the 4 statements about nonnative species are true. Select the exception.

Everglades National Park was established in 1947, but the Everglades continues to need more protection because ____.