Questions and answers for exam Preparation

MCQs

Total Questions : 10

Which of the following is not one of the major environment problems resulting from human interference in the nitrogen cycle?

Nitrous oxide release increases global warming
Stratospheric ozone depletion
Increased acid rain
Eutrophication

Discuss Question

Answer: Option B. -> Stratospheric ozone depletion
:
B

Question 2.

Which of the following is not a reason for more optimism that humans are not heading into an environmental Armageddon in the future?

Environmental science now has a much greater understanding of the impacts of human activities and the response of environmental systems
The technology for alternative sources of energy (other than fossil fuels) has been developed and is only waiting for the appropriate economic conditions for widespread implementation
People are beginning to accept the significance of human-environment relationships and international collaboration to curb environmental problems is beginning
The development of genetic modification technology is allowing humans to engineer their own resources no matter what the environmental conditions are

Discuss Question

Answer: Option D. -> The development of genetic modification technology is allowing humans to engineer their own resources no matter what the environmental conditions are
:
D

Question 3.

Approximately what proportion of the global land surface is used for agriculture and grazing by the world's 6 billion people?

One tenth
One third
One eightieth
Three quarters

Discuss Question

Answer: Option B. -> One third
:
B

Question 4.

Which of the following is not one of the prime health risks associated with greater UV radiation through the atmosphere due to depletion of stratospheric ozone?

Damage to eyes
Reduced immune system
Increased skin cancer
Increased liver cancer

Discuss Question

Answer: Option C. -> Increased skin cancer
:
C

Question 5.

What is the primary reason for targeting 'biodiversity hotspots' for conservation?

The number of species threatened far exceeds our capacity to protect them and we can therefore only concentrate on areas of highest species diversity
To protect all areas of threatened species would not allow for new species to develop
They are the only areas where species are seriously threatened in the world
They are areas where people do not live and conservation would therefore not be effecting the economic development of the area

Discuss Question

Answer: Option A. -> The number of species threatened far exceeds our capacity to protect them and we can therefore only concentrate on areas of highest species diversity
:
A

Question 6.

Which of the following is not a major greenhouse gas?

Methane
Water vapour
Calcium Carbonate
Carbon Dioxide

Discuss Question

Answer: Option C. -> Calcium Carbonate
:
C

Question 7.

The 1987 Montreal Protocol was signed for which of the following reasons?

To stop the global trade in products made from endangered tigers
To phase out the use of CFC's, found to be causing depletion of the ozone layer
To ban nuclear testing in tropical oceans
To begin converting from fossil fuel use to more renewable energy sources to reduce the anthropogenic greenhouse effect

Discuss Question

Answer: Option B. -> To phase out the use of CFC's, found to be causing depletion of the ozone layer
:
B

Question 8.

What was the focus of Rachel Carson's book Silent Spring in 1962?

The potential ecological devastation of pesticides such as DDT in the ecosystem
Economic and social chaos resulting from a computer virus under a society with an over-concentration on technology and computers
Rapid global warming resulting from fossil fuel burning and deforestation
The potential for resource depletion leading to global poverty and starvation from increasing population growth

Discuss Question

Answer: Option A. -> The potential ecological devastation of pesticides such as DDT in the ecosystem
:
A

Question 9.

Which of the following is not a major positive feedback mechanism in which the activity of humans to increase global climate temperatures leads to an even further increase?

Tropical deforestation causes warming and drying so that remaining forests begin to decline
Global warming causes snow to melt in polar regions and therefore increases global albedo
Global warming causes increased CO2 release from biomass decomposition
Global warming causes increased rainfall, plant growth and photosynthesis

Discuss Question

Answer: Option D. -> Global warming causes increased rainfall, plant growth and photosynthesis
:
D

Question 10.

What was the message that the Club of Rome were trying to send to the world in 1972?

Humans were heading on a path to massive environmental degradation and resource exhaustion
Nuclear power is the answer to the world's resource limitations
Global populations will naturally start to decline and therefore the world's problems will begin to subside
Global populations will naturally start to decline and therefore the world's problems will begin to subside

Discuss Question

Answer: Option A. -> Humans were heading on a path to massive environmental degradation and resource exhaustion
:
A