What are the key agricultural products in canada and the united states?

Atown is built on the banks of a small lake on the edge of a desert. after some time, the townspeople discover that water from the lake has become too polluted to use. describe one way that the lake may have been contaminated by the actions of the townspeople, and explain how the townspeople can remediate this problem.

What is the northern most national park in the world

You could say the relative location of washington, d.c.