What is the most common type of
vegetation in the central area of
southern Canada and the United
States? Which country has more
land with that type of vegetation?

The most common type of vegetation in the central area of southern Canada and the United States is temperate grassland. The United States has more land with temperate grassland.

both are true, the congress does have the power to create banks, even if this power is not specifically described in the constitution, since there is nothing restricting it and there is power given to the congress to make "all laws which shall be necessary and proper". maryland was not allowed to tax a branch of the national bank operating there, and the supreme court decided that no state could. both of these topics were discussed in a decision of the mcculloch v. maryland case in 1819.

a. theta waves. this is because the person is in a light sleep which means the brain waves would show these kind of waves.