: One of the most abundant photosynthetic organisms on Earth; it is estimated that one out of every five breaths we take originates from this single genus of bacteria.
), and water to create energy, releasing oxygen as a byproduct. : Oxygene - The Ocean
: Like land plants, phytoplankton use sunlight, carbon dioxide ( CO2cap C cap O sub 2 : One of the most abundant photosynthetic organisms
: Single-celled algae that also contribute significantly to the oxygen cycle. Does the ocean produce oxygen? and water to create energy