What has caused a 90% decrease in southern california steelhead run sizes? a. erosion b. dams along water sources c. oil drilling d. biomass contamination

Plz will mark! the diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

The nursing instructor has been observing nursing students initiate an iv infusion. which action(s), if made by the nursing student, indicates that further instruction is needed? (select all that apply.) the nursing student:

Which process of living things produces water that enters the water cycle