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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
ozone thinning
C
water pollution
D
acid rain
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 lower amounts of carbon dioxide
B
the solar flares reaching Earth
C
increased use of fossil fuels
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
increases in average temperatures with increasing volcanic activity
B
a recent rise in global temperature as atmospheric pollution increased
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
More plant life would grow and help reduce the greenhouse effect.
D
Evaporation would decrease and produce clouds blocking the Sun.
5) Which of these is a threat to the survival of an ecosystem?
A
less biomass at higher levels of the food web
B
a shrinking variety of animal and plant species
C
competition among some consumer populations
D
predator prey population cycles
6) Global warming affects sea levels. Which of these is a likely consequence if the trend of global warming continues in coming decades?
A
Melting glaciers will cause flash flooding in mountainous regions.
B
Evaporation will cause sea levels to drop enlarging coastal areas.
C
Evaporation will cause the formation of fjords and Ushaped valleys.
D
Melting glaciers will cause flooding of coastal towns and cities.
7) Can we reduce or reverse the effects that burning fossil fuel has on atmospheric carbon by stopping deforestation?
A
yes, atmospheric carbon would be greatly reduced
B
atmospheric carbon would be reduced by half
C
It will first reduce the amount of atmospheric carbon, but then the levels would rise
D
no, stopping deforestation will not have any impact on reducing atmospheric carbon
8) Carbon is required for photosynthesis. Where does the required carbon come from?
A
respiration
B
the soil
C
fossil fuels
D
the atmosphere
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 increases their territories
B
It eliminates their predators.
C
It narrows their ecological niche.
D
It removes their need for sunlight.
10) What are two natural phenomenon that can be attributed to global warming?
A
sunspots and ocean acidification
B
sunspots and volcanoes
C
volcanoes and ocean acidification
D
ocean acidification and deforestation
*select an answer for all questions
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