Some opponents of the theory of evolution dismiss the idea as being “just a theory.” why is this not a very good argument against the theory of evolution?

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

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.