Is canada sparsedly or densely populated and why?

How do oceanographers measure the salinity of ocean water?

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

5. what is a red giant? can our sun become a red giant? why or why not?