Ocean acidification is taking place as the oceans absorb some of the additional carbon dioxide in the atmosphere. What is the basic environmental problem that this creates?
A. causes the oceans to become even more saline, thereby reducing ocean circulation.
B. more difficult for marine organisms to secret their own protective shells.
C. increases the rate of evaporation of seawater.
D. makes it unsafe for humans to go swimming in the ocean.
E. all of the answers listed here.
Answer: B
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The system of most restricted public lands, where no roads can be built but recreation is allowed, is called the
A. National Parks system. B. Wildlife Refuges system. C. National Resource Lands system. D. National Forests system. E. National Wilderness Preservation Lands system.
The multiple nuclei theory recognized that
A) cities grow. B) residential areas are racially segregated. C) cities develop around several nodes. D) urban sprawl has developed in cities.
Innovations in agriculture have increased food supply. This has allowed human populations to grow to approximately ________ by the end of the agriculture period
A) 100 million B) 1 billion C) 1.5 billion D) 1 million E) 500 million
Identify and describe several international efforts to limit air pollution
What will be an ideal response?