Which of the following statements is false?Algae are used to make many commercial products, like marshmallows and paint. Algae can be used as fertilizer. Algae can be used to make a polishing substance. Algae contributes to the phosphorus cycle.

Algae contributes to the phosphorus cycle

Explanation:Algae are organisms which have distinct chlorophyll and are autotrophic in nature .Most of them live in water.Algae include the Unicellular chlamydomanas and the multicellular sea weed.some algae are colonial and some are filamentuous.Algae possess chlorophyll, carotenoids and phycobillins as pigments.

Algae are important primary producers in the water bodies and produces a significant portion of oxygen.

Some algae eg diatoms are fossilized due to their glass cell wall and are known as diatomaceous earth, which has various uses such as abrasives,tooth paste and as filters.

Red algae produces calcium carbonate which forms coral reefs.

The products of some algae are used as solid gels and source of agar for microorganism culture.

a and c are the answeres