Where in the world is the most severe ozone depletion?(Please select one answer)
A. Over Antarctica
B. Over hot equatorial regions
C. In urban environments
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Over the past 200 years, ocean uptake of CO2 has ________________ the effects of climate change.
Accelerated
B. Moderated
Cancelled out
D. Masked
Does ocean acidification have the same impact across the entire ocean?(Please select one answer)
A. Yes, because it is caused by an increase of atmospheric CO2, which affects oceans globally in the same way
B. No, because acidification mostly affects corals in tropical waters
C. Yes, because upwellings* blend alkaline and acidic waters
D. No, because water temperature and oxygen saturation influence the rate of acidification
What is the main source of alterations to N and P flows in the Anthropocene?(Please choose one correct answer)
A. Excessive algal growth
B. The use of chemical fertilizers in agriculture
Climate change
D. Ocean acidification
Why is it important to limit nitrogen 'N' and phosphorus 'P' flows?(Please choose one correct answer)
A. Because N and P inhibit algal growth
Because excess N and P disrupts biogeochemical cycles
C. Because soils are N and P saturated
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