In an estuary, there is shallow, brackish water. what component of an estuary is this an example of?

The answer is Habitat. The brackish water environment is formed due to the mixing of fresh water from the river with the salty waters of the ocean. This habitat is significant for fishes that come to spawn and feed. Crabs, mosquitoes and birds can also be found in this environment.

The punnett square is the device used to predict genetics.