Answer:
The correct option is C) The three species share many characteristics and are biologically related.
Explanation:
A genus can be described as the rank in biological system of classification which stands just above the rank of species. The organisms belonging to the same genus are more closely related to one another than to the organisms of the upper rank. Organisms is a genus show many shared characteristics and are biologically related to one another. Hence, we can say that the species Ursus arctos, Ursus mantimus and Ursus americanus are all members of the same genus share many characteristics and are biologically related to one another.
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.
Learn more about nitrogen fixation:brainly.com/question/19938608
#SPJ1