A. 6 oxygen
Because it doubles hope it helps
Fish rely on coral for food and shelter.
Almost 1/3 of all marine fish have lived in coral reefs as shelter and protection from their predators.
Coral reefs are also home to various algae and fungi which in turn becom fish food.
Fish and other marine animals provide nutrients for the coral reefs to grow while coral reefs provide fish and marine animals protection and shelter.
The formulation of zinc that has been found somewhat effective in treating the symptoms of the common cold is the zinc gluconate. Zinc gluconate may also be used to treat and to prevent zinc deficiency. Zinc is an important mineral for growth and for the development and health of body tissues.
Answer:
Methanotrophs.
Explanation:
Methanotrophs are those microbes (bacteria) which feeds on methane or used methane as energy source for their survival. These type of microbes survive by using single carbon compound as a source of energy. So we can say that due to the presence of Methanotrophs, the level of methane decreases while there is no change occurs in oxygen saturation level.
