The ocean floor can be up to 10,000 meters in depth. light does not penetrate beyond 200 meters below the ocean's surface. oxygen levels can also be limited far below the ocean's surface. however, complex food chains can exist below the ocean's surface, even in the deepest areas of the ocean floor. what statement below best explains this phenomenon?
a) photosynthesis occurs at the ocean floor as bacteria use solar energy to convert carbon dioxide into carbohydrates.
b) chemosynthesis occurs at the ocean floor as bacteria use h2s to convert carbon dioxide into carbohydrates.
c) photosynthesis occurs at the ocean floor as phytoplankton use solar energy to convert carbon dioxide into carbohydrates.
d) chemosynthesis occurs at the ocean floor as phytoplankton use h2s to convert carbon dioxide into carbohydrates.
hint* phytoplankton are floating algae and photosynthetic organisms