25 risk of a major tsunami along the coast of british columbia and the adjacent area of the united states exists because the juan de fuca plate is subducting the north american plate. compare the risk here with the situation in the indian ocean.

Write a 150-word essay describing the effect of people's activities on the environment in the region.

The ozone hole is at its biggest each year in the ? hemisphere in the ? season.

Which of the following best describes the purpose of a nation’s boundaries? a. to limit the movement of goods and people b. to make it easier for cartographers to create maps c. to make the movement of goods and people easier d. to prevent other countries from invading territory