Which planet has the shortest period of revolution?

A.

Mars

B.

Earth

C.

Venus

D.

Mercury

Largest river in the world

What makes up about 50 percent of all land areas in United States? 1. Plateaus 2. Plains 3. Mountains 4. Volcanoes I think 4 is out, but I am not sure about 1,2 & 3

Where do dolphins get their names?

Which one is the largest desert in the world? a. sahara b. gobi

Which "sphere" is not directly studied in one of the main branches of Earth/space science (geology, astronomy, meteorology, or oceanography) ? a. biosphere b. exosphere c. atmosphere d. hydrosphere

Capital resources include A. all of the contributions of humans, be they physical or mental. B. only things like soil, forests, water, and minerals. C. all of the tools and machines used in industry. D. anything that is naturally made by Earth.

The Himalayan Mountain system, which includes outlying sub ranges, stretches across six countries - Afghanistan, Bhutan, China, India, Nepal, and Pakistan. True False

how do air masses affect the weather?

What is a problem Natives in both Bolivia and Peru face?

When is the Earth said to be at perihelion?