What are two scales used to measure an earthquake? what is the difference between them?

From which soil horizons do plants draw nutrients

Describe the factors that control the rate of chemical weathering and those that control the rate of physical weathering

German has been adopted as the official language for the Olympics. true or false.

What theory explains the causes of earthquakes and volcanoes? continental drift hydrologics plate tectonics weathering

Why is the Sahara (in Africa) considered a physical region?

Would u think that because we added tar and many other things over the years to the road our road levels would be lower and in the old days would be no fog because the clouds didn't go lower than they do now?

What factors are considered when determining a country's rate of natural increase

A b c or d which one is it

If sun lost all its energy what would happen to earth and its inhabitants

A bag contains 5 red marbles, 3 blue marbles, 7 yellow marbles, and 2 green marbles. Which ratio can be used to compare the yellow marbles to the blue marbles? A) 3 11 B) 3 7 C) 7 11 D) 7 3