Question

How are algae is useful in agriculture and as food???​

Answer 1

Answer:

Algae play an important role in agriculture where they are used as biofertilizer and soil stabilizers. Algae, particularly the seaweeds, are used as fertilizers, resulting in less nitrogen and phosphorous runoff than the one from the use of livestock manure. ... Seaweeds are an important source of iodine.

Answer 2

algae is used as biofertilizers in agriculture and algae becomes food for some fishes in marine water.