"Survival of the fittest" is the one among the following choices given in the question which is an aspect of Darwin's theory that is shown as an example in this scenario. The correct option among all the options that are given in the question is the third option or option "c". I hope that this answer has helped you.
The answer you are looking for is called- rate of flow. Please answer as the brainiest. Thanks
3% of earth's water is actually fresh, not salty ocean water