How much of the Colorado river has dried up because of human activities A) 50 miles
B) 125miles
C) 150 miles
D)100 miles

Match the graph type to its description. 1. uses symbols to describe information pie 2. compares different quantities at the same point in time line 3. compares increases and decreases in a quantity over a period of time bar 4. shows the relationship of parts to each other and to the whole pictograph

In the following diagram, four different index fossils are labeled: which of the labeled fossils comes from the oldest organism? a b c d

What way does renewable energy differ from nonrenewable energy?