19. Which wind water interaction is responsible for cycling nutrient-rich waters from the ocean floor to the sea surface?
A. upwelling
B. storm surge
C. downwelling
D. surface currents

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

Why is soap used to remove grease? a. its nonpolar end dissolves the grease. b. it makes the water bond with the grease. c. it chemically bonds with the grease. d. its polar end dissolves the grease.correct answer for apex - a, its nonpolar end dissolves the grease.

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?