Ireally need with these marine science questions.

1: which ocean zone has the greatest temperature variation with increasing depth?

a: bathypelagic zone
b: abyssopelagic zone
c: mesopelagic zone
d: epipelagic zone

2: what abiotic components would most likely change in a deep ocean ecosystem during upwelling?

a: increase in oxygen content
b: decrease in oxygen content
c: increase in competition
d: decrease in competition

3: what property of water results from the high cohesion between water molecules?

a: surface tension
b: low density as a solid
c: low vapor pressure
d: high heat capacity