Question

Give one important use of algae.

ANSWER:
Algae produce oxygen during photosynthesis that animals and humans use during respiration.​

Answer 1

Answer:

Fertilizer. Algae has long been used to fertilise crops as they provide a rich source of nutrients and organic matter. Algae can be directly deposited on the land where it decomposes or algae extract can be sprayed on the crops.

Answer 2

Answer:

medical treatment

Explanation:

experts use algae as a medicine to cure people