Answer:
Niche (ecology): In ecology, the term “niche” describes the role an organism plays in a community. A species' niche encompasses both the physical and environmental conditions it requires and the interactions it has with other species like predation.
Symbiosis: A mutually beneficial relationship between different people or groups.
Competition (ecology): Ecological competition is the struggle between two organisms for the same resources within an environment. Resources are components of the environment that are required for survival and reproduction such as food, water, shelter, light, territory, and substrate.
Mutualism: Symbiosis that is beneficial to both organisms involved.
