For which planets is it possible for the sun to remain overhead for years at a time at either pole and for the equator to receive almost no sunlight for years?

Name 3 elements that led to the fall of the Roman Empire

Automobile makers in US should be required by law to make all their vehicles fuel efficient, even though the vehicles may become more expensive? Agree or disagree? Why?

Which of the following is not a pillar of The Nuclear Proliferation Treaty? Nonproliferation Reduction of nuclear weapons by 85-90% Right to peacefully use nuclear power Disarmament

What makes the Himalayas unique

Largest river in the world

Which of the following is not a natural cause of climatic change? A. Human activity B. Solar activity C. Earth's tilt D. Volcanic activity

Where are the cool and the hot regions of the mantle located under?

Limited water resources have promoted scientist developed ways to remove salt from seawater to make it usable for drinking in farming this process is called

The internet and cell phones are examples of what media

What is the difference between the windward and leeward side of a mountain?