In the arctic
a. Temperatures have risen twice as fast as the rest of the world during the past 50 years
b. Soot is darkening the ice, causing it to reflect more radiation
c. Sea ice is increasing while land based ice is decreasing
d. A and B are correct
e. None of the above
A
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Which nation in the region has an official ideology of "self-reliance" known as juche?
A) Japan B) China C) Taiwan D) North Korea E) South Korea
Urban agriculture includes:
A. City-sponsored initiatives B. Community gardens C. Backyard gardens D. Backyard gardens, community gardens, and city sponsored initiatives E. Backyard gardens and community gardens
Which marine ecosystem has the highest average net primary productivity?
A) Algae beds and coral reefs B) Estuaries C) Freshwater swamp and marsh D) Open Ocean E) Upwelling zone
Living vegetation and the ocean are known as "carbon sinks" because:
A. They create carbon. B. They are made of carbon. C. Due to gravity, carbon is found closer to the ground. D. They destroy carbon. E. They store carbon.