Hydrothermal vents, submarine hot springs, and methane cold seeps release heat and chemicals deep below the surface of the ocean. surprisingly, the areas around these sites are able to support ecosystems. based on this information, such ocean ecosystems most likely contain a. primary consumers that obtain energy from photosynthetic plants. b. primary producers that create energy from oxidizing chemicals. c. primary producers that obtain energy from photosynthetic plants. d. primary consumers that create energy from oxidizing chemicals.