Answer: <em>Mean sea level is an average level of the surface of one or more of Earth's bodies of water from which heights such as elevation may be measured.</em>
You would probably be better off with terrorism and chemistry. Those two subjects seem to be a thought provoking project to do. Good Luck!
Green house effect is the trapping of heat by some gases ! mainly in our earth this is increasing due to CO2 !
Hi! I believe it's Stormwater Management.
Hope this helps!
Love grace-
Answer: North Dakota
Explanation: The geographic center of North America is set near Rugby, North Dakota 48°10′N 100°10′W, though this has no official status.