Question

Most organisms do not use free _______ . (a) carbon dioxide (b) nitrogen (c) sulphides (d) air.​

Answer 1

Answer:

c) sulphides

Explanation:

Hope it helps mate!

Answer 2

The correct option is b.

Most organisms do not use free __nitrogen_____ .

• Nitrogen present in the air is not directly used by organisms.
• Rhizobium bacteria which lives in leguminous plants can directly use the free nitrogen. This nitrogen transfer to leguminous plants and animals, humen who use it can get the nitrogen.