Two conditions for total internal reflection to occur

Comparing cinder cones to shield volcanoes:

What is a drumlin a) a glacial landform b) a type of mountain c) a type of fossil What processes formed the Great Lakes a) glacial erosion b) erosion by rivers c) earthquakes What part of Canada is the most prone to droughts?

A group of organisms of the same species that live in a specific geographical area

Which side of Germany did NOT belong to the USSR?

A stunt person jumps from the roof of a 54-foot building. A skydiver jumps from a plane that is 186 times as high. From what height did the skydiver jump?

What is the closest galaxy to Milky Way?

To which category do carbon dioxide, volcanic activity, moisture, and acid rain belong? a. chemical weathering c. mechanical weathering b. mineral weathering d. erosion weathering

Some planetesimals in our early Solar System became large enough to attract their neighbors gravitationally and grow by the process called accretion. As they increased in mass they became what astronomers call: A. particulate planetsB.

Because if the high percentange of europeans living there, what two countries are known as immigrant nations?

What were some of the results of Soviet control of Eastern Europe?