Answer: Ecosystem
Explanation: An ecosystem consists of all the biotic and abiotic factors in an area and their interactions. A niche refers to the role of a species in its ecosystem. A habitat is the physical environment in which a species lives and to which it is adapted.
Breaking down food into smaller molecules. Absorbsion of nutriets taking place in the small intestine and elimination of waste products through the large intestine/ Colon
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.
Answer:
90,000 i think if its right your welcome if its not let me know