The Aromatic hydrocarbon is the most common in nature.
For the answer to this question i don't know yet.
It is d: both b and c the capillary action and transpirational pull
Plants need nitrogen in order to grow. Nitrogen is abundant in the earth's atmosphere, but plants cannot use it in that particular form (nitrogen gas). Certain bacteria which reside on some plant roots are able to change atmospheric nitrogen into a form that plants can use (ammonia).
