What is one physical feature that affects Ontario in a bad way?

Write a short paragraph of about 150-300 words. explain how the physical environment can limit human activities.

How would i answer this for an exam?

Which of the following is not a challenge to instituting sound global environmental policies? a. most changes are inexpensive and easy to implement. b. elected leaders who support unpopular environmental issues often are not re-elected. c. economic considerations outweigh environmental ones in many societies. d. there is no way to enforce international environmental agreements.