What is the land ecosystem dominated by grass?
a. tundra
b. desert
c. forest
d. grassland

Which is a possible result of higher air temperatures caused by global warming? a. increase in sea level b. freezing of polar ice caps c. rapid evaporation of water in the soil d. flooding of low-lying coastal areas

Where is the only active diamond mine in the u.s.?

Using a tool requires the correct technique. which describes the technique that is used with a graduated cylinder?