Which of these renewable energy sources is the most widely used?  Hint: The term widely is the key to answering this question correctly as it implies geographic extent, not total use.

A. hydropower
B. geothermal
C. solar
D. wind power


Answer: A

Environmental & Atmospheric Sciences

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Birds evolved from ________

A) apatosaurus B) gymnosperms C) archaeopteryx D) tree-climbing amphibians E) pterosaurs

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High tides are higher than average and low tides are lower than average when

A. it is a new moon. B. it is a full moon. C. the Moon and the Sun are aligned relative to the Earth. D. All of these choices are correct.

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List some of the reasons why the Thai seafood industry is associated with environmental and labor controversies

What will be an ideal response?

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the most recent Era on the earth is ______.

a - miocene b - eocene c - cenozoic d - permian e - precambrian

Environmental & Atmospheric Sciences