To produce a commercially viable oil deposit, there must be a source rock, a reservoir rock, a seal rock, and a(n) .

What first caused people to consider that the continents were once one large landmass?

Which part of a mountain receives the majority of moisture due to the rain shadow effect? a. the leeward side b. the windward side c. the bottom of the mountain d. all parts of the mountain receive equal amounts of moisture.

Why do farmers in different regions use different farming techniques