A reddish pink color indicates that the bacteria are active and fixing nitrogen.
<h3>What is nitrogen fixation?</h3>
The term nitrogen fixation has to do with the ability of certain bacteria to trap and fix nitrogen into the root noodles of leguminous plants. This is an active part of the nitrogen cycle.
Thus, a reddish pink color indicates that the bacteria are active and fixing nitrogen.
Two objects that are similarly charged will repel, while two objects with oppositecharges will attract. Moreover, a neutral object will attract either charges.