Up to how much of the glacier ice has melted from Mount Everest's north side between 1921 and 2008? (starting at 5:00) a. 10%
b. 40%
c. 75%
d. 100%

Computer models can scientists predict weather. some computer models can show the predicted path of hurricanes. what other events could a computer model warn us of? a) undersea earthquakes , tornadoes, and avalanches b) tornadoes c) avalanches d) undersea earthquakes

Which factors add to the greenhouse effect and are caused by human activities?

According ti the following map, what are the most common mineral resources found in the united states?