An impact crater forms when a meteor hits the earth's surface with enough mass and velocity. A maar is a volcanic crater that forms when
magma interacts with groundwater and causes a small explosion. Which
statement about impact craters and maars is correct?
Select one:
-Impact craters form over short periods of time, and maars form over long periods of time.
- Impact craters form over long periods of time, and maars form over short periods of time.
-Both impact craters and maars form over long periods of time.
-Both impact craters and maars form over short periods of time.

How does upwelling affect coastal fisheries? upwelling damages nutrient supplies at coastal fisheries as the warm, nutrient-rich surface water is replaced by nutrient-poor, cold water. upwelling damages nutrient supplies at coastal fisheries as the cold, nutrient-rich surface water is replaced by nutrient-poor, warm water. upwelling improves the nutrient supply at coastal fisheries as the warm, nutrient-rich surface water replaces the nutrient-poor, cold water. upwelling improves the nutrient supply at coastal fisheries as cold, nutrient-rich water replaces the warm, nutrient-poor surface water.