What are two methods of support used to keep a system operating safely and efficiently?

What is the name of the ocean current that affects the british isles? how does it influence their climate?

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.

Suppose you had to resolve the problems believed to be caused by distance decay in russia. what would you suggest?