Answer:
The smallest planet is Mercury
Explanation:
The answer is nitrogen fixation.
Hope this helps
Well, the food is in the environment. I would like to compare it with how bacteriae feed (however my biology is quite rusty), that is, they engulf their food and they "digest" -- not the proper term, since there are no organs to do real digestion -- it.
<span>i think it is a.Molecules move against their concentration gradient. hope it helps
</span>