The thin layer of living things, of which we are an inseparable part, is the
A) lithosphere.
B) hydrosphere.
C) biosphere.
D) troposphere.
Answer: C
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Which country has the largest portion of the world's proven oil reserves?
A. China B. United States C. Russia D. Ukraine E. Venezuela
As a source of energy, developed countries rely on ________ the most, while developing countries rely more heavily on ________
A) fossil fuels; nuclear power B) wood and other biofuels; fossil fuels C) coal; oil and natural gas D) oil and natural gas; coal
Glass bottles or aluminum cans may be recycled into similar new bottles and cans; recycled plastic objects generally can't be remanufactured back into the same objects.
Answer the following statement true (T) or false (F)
The U.S. has set aside a larger proportion of land area for biodiversity than any other country in the world.
Answer the following statement true (T) or false (F)