Question

1. Nostoc contains two pigments/
proteins,blue/black phycocyanin and red/yellow phycoerythrin,as well as brown/green chlorophyll.
2. It can fix nitrogen in specialized cells called heterocysts/rhizoids.
3. Also used tasty/
supplementary food due to
vitamins and proteins/
carbohydrates in them.​

Answer 1

Answer:

okay i the answer

Explanation:

should I tell??