DSST Environment & Humanity

Question 0

About how long does the methane that is released from biological sources remain in the atmosphere?

Answer 0

12 years

Question 1

Which layer of the Earth’s atmosphere contains ozone?

Answer 1

Stratosphere

Question 2

Which three soil nutrients are most commonly supplemented through the use of chemical fertilizers?

Answer 2

Nitrogen, phosphorous, and potassium.

Question 3

Which of the following might be an abiotic factor in a temperate deciduous forest?

Answer 3

A mountain stream

Question 4

All energy efficient fuel cells are fueled by some form of…

Answer 4

Hydrogen

Question 5

Which statement is true about the human impact on marine Ecosystems?

Answer 5

Fish farming results in the spread of disease in wild fish

Question 6

The United Nations Educational, Scientific, and Cultural Organization’s (UNESCO) mission does NOT include..

Answer 6

Designating and preserving historical sites.

Question 7

The beginning of the Green Revolution made extensive use of which of the following techniques?

Answer 7

Chemical fertilizers and pesticides

Question 8

What are the two gases most abundant in Earth’s atmosphere?

Answer 8

nitrogen and oxygen

Question 9

Exposure to which of the following causes complete decomposition of atmospheric CFCs?

Answer 9

UV radiation

Question 10

Which of the following are examples of O horizon materials?

Answer 10

loose leaves and organic debris

Question 11

Consumers that feed at all trophic levels are?

Answer 11

Decomposers

Question 12

Which of the following is true of the Law of the Sea?

Answer 12

The Law of the Sea aids in the control of mineral resource exploitation in international waters.

Question 13

Which of the following best describes the role of nitrifying bacteria in the nitrogen cycle?

Answer 13

They convert ammonia to nitrate.

Question 14

Which of the following countries has the greatest biodiversity?

Answer 14

Brazil

Question 15

Which of the following human activities has the greatest effect on the nitrogen cycle?

Answer 15

Burning fossil fuels

Question 16

Most available freshwater is used for which of the following?

Answer 16

Agriculture

Question 17

A wildlife corridor would be incorporated into a proposal for

Answer 17

sustainable land use strategies

Question 18

The energy needed by plants for photosynthesis is provided by

Answer 18

the sun

Question 19

How much warmer is Earth today then the last Ice Age?

Answer 19

5-9F

Question 20

Which of the following might be a trace element cycling through an ecosystem?

Answer 20

iron

Question 21

Which of the following is the greatest major source of solid waste in the United States?

Answer 21

mining

Question 22

Which of the following could be a valid argument against the use of genetically modified organisms?

Answer 22

GMOs may pass on genetic variations to native crops and upset the ecological balance

Question 23

Which of the following federal agencies regulates the use of pesticides?

Answer 23

Environmental Protections Agency

Question 24

Which of the following is a type of solar heating that uses pipes to transfer heat to a desired area?

Answer 24

active solar heating

Question 25

Which of the following processes is important for the role of producers in the carbon cycle?

Answer 25

photosynthesis