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Biodiversity And Global Warming
Test Description: Affects of GHGs and Global warming
Instructions: Answer all questions to get your test result.
1) Methane has the same effect in the atmosphere as carbon dioxide. As more livestock are raised to provide food for humans, what is the most likely effect of the increase in methane?
A
global warming
B
acid rain
C
water pollution
D
ozone thinning
2) The average temperature of Earth has increased approximately 0.8°C in the last one hundred years. Which of the following do researchers most attribute to this temperature increase?
A
the solar flares reaching Earth
B
increased use of fossil fuels
C
the lower amounts of carbon dioxide
D
increased population in thirdworld countries
3) Paleoclimatologists study the climate and its changes throughout Earth’s history. What observation by paleoclimatologists led scientists to predict that the average temperature of the planet is rising due to the combustion of fossil fuels?
A
a recent rise in global temperature as atmospheric pollution increased
B
increases in average temperatures with increasing volcanic activity
C
direct correlation between atmospheric carbon dioxide level and global temperature
D
changes in sea level that correspond to average global temperature
4) What effect would a longterm rise in the average surface temperature have on the oceans?
A
Polar ice would melt and result in the levels of the ocean rising
B
Oceans would absorb the heat and hold temperatures lower.
C
Evaporation would decrease and produce clouds blocking the Sun.
D
More plant life would grow and help reduce the greenhouse effect.
5) Which of these is a threat to the survival of an ecosystem?
A
a shrinking variety of animal and plant species
B
competition among some consumer populations
C
predator prey population cycles
D
less biomass at higher levels of the food web
6) Global warming affects sea levels. Which of these is a likely consequence if the trend of global warming continues in coming decades?
A
Evaporation will cause sea levels to drop enlarging coastal areas.
B
Melting glaciers will cause flooding of coastal towns and cities.
C
Evaporation will cause the formation of fjords and Ushaped valleys.
D
Melting glaciers will cause flash flooding in mountainous regions.
7) Can we reduce or reverse the effects that burning fossil fuel has on atmospheric carbon by stopping deforestation?
A
atmospheric carbon would be reduced by half
B
yes, atmospheric carbon would be greatly reduced
C
no, stopping deforestation will not have any impact on reducing atmospheric carbon
D
It will first reduce the amount of atmospheric carbon, but then the levels would rise
8) Carbon is required for photosynthesis. Where does the required carbon come from?
A
the atmosphere
B
respiration
C
fossil fuels
D
the soil
9) The average global ocean temperature in 1912 was 15.8°C, and in 2011 this temperature was 16.5°C. Algae have an optimal growing range of 16°C to 27°C. What is the predicted impact of the change in average ocean temperature on algae?
A
It narrows their ecological niche.
B
It removes their need for sunlight.
C
It increases their territories
D
It eliminates their predators.
10) What are two natural phenomenon that can be attributed to global warming?
A
ocean acidification and deforestation
B
sunspots and ocean acidification
C
sunspots and volcanoes
D
volcanoes and ocean acidification
*select an answer for all questions
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