Most scientists argue that the greatest environmental problem facing the world today is:
a. climate change.
b. the ozone hole.
c. water pollution.
d. overpopulation.
e. overfishing.
D
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You want to maintain a healthy pond at your school site. Last year another pond became eutrophic; to avoid that, you want to ________
A) provide nitrogen for good nutrient mixing in the benthic zone B) increase the ozone in the littoral zone C) avoid increasing phosphorus runoff into the limnetic zone D) decrease the calcium available in the profundal zone E) increase the carbon-based fertilizers in the littoral zone
An immigrant entering Europe illegally would face a border patrol between Hungary and
A) Serbia B) Slovakia C) Bulgaria D) Austria
Climate change has led to the accelerating loss of glaciers
Indicate whether the statement is true or false
The Sun's principal outputs consist of the solar wind and radiant energy
Indicate whether the statement is true or false