Which best describes the source of oxygen in ocean water? A. Oxygen is produced by marine plants in the process of making food.

B. Oxygen is produced through the exhalations of marine animals.

C. Oxygen is produced through precipitation falling on the ocean.

D. Oxygen is produced by nodules on the ocean floor

Geothermic gradient is the rate of increasing temperature with respect to increasing the depth in the earths interior. away from tech tonic plates boundaries, it is about 25-40 c/km (72-87 degrees f/mi) of depth near the surface in most of the world.

"the socialist system that had been in place had brought economic ruin to the country." i hope this !

Hey there 78724,answer: this was part of the brazil's rural development strategy. thus, brazil began a road construction programme.hope this : d~top

The shia sect of islam is primarily different from sunni islam in the belief that the first legitimate imam following muhammad was imam ali. unlike the three caliphs that succeeded muhammad, ali was part of muhammad's clan (related to him). major shia caliphates include the fatimid and safavid caliphates.  the answer will be option c. shia read more on