What organism usually fixes nitrogen into usable chemical forms?
A) Archaea
B) Extremophiles
C) Cyanobacteria
D) All of these choices
C
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After poverty and gender, the greatest risks people in the United States face are mainly from lifestyle choices.
Answer the following statement true (T) or false (F)
What kind of economic system does the United States have?
A. It converts high quality matter and energy into waste and pollution. B. It strives to conserve resources at the expense of economic growth. C. One in which the cost of goods and services reflects their environmental impacts. D. One in which the main goal is the long term sustainability of resources.
The country of Albania is part of the Balkan Peninsula and thus falls in the:
A) economic core B) Alps C) Massif Central D) economic periphery
The thickness of oceanic crust increases with age
a. true b. false