Science & Environment Test

Estuaries are a place where saltwater from the ocean and freshwater from rivers or streams mix in shallow waters. They are partially enclosed bodies of water, usually found where rivers meet the sea. Estuaries are highly productive ecosystems that support a diverse range of plant and animal species. The mixing of salt and fresh water creates a unique environment with varying salinity levels, which allows for the growth of specialized vegetation and provides a habitat for many fish, birds, and other organisms. Estuaries also serve as important nurseries for various marine species, making them vital for the overall health of coastal ecosystems.

An ecosystem refers to a place where living and non-living things interact in a given place. It encompasses all the organisms present in a particular area, as well as the physical environment they inhabit. This includes plants, animals, microorganisms, and their surrounding atmosphere, water, and soil. Ecosystems are dynamic and interconnected systems where energy and nutrients flow through various components, creating a balance and interdependence between different organisms and their environment.

The correct answer is everglades. The Everglades is a unique ecosystem located in southern Florida that is home to a diverse range of plant and animal species, including alligators. It is not just a population or community, but rather a complex ecosystem that supports various interactions and relationships between different organisms. The Everglades is known for its vast wetlands, marshes, and mangrove forests, making it a crucial habitat for many species and an important natural resource.

The term "population" refers to the total number of people living in a specific area, such as a town. It is a measure of the size and density of the community. In this context, the answer "population" is the most relevant term that accurately describes the number of people living in a town.

A community is made up of many different populations of living things in an ecosystem. In an ecosystem, various species interact with each other and their environment, forming a complex network of relationships. These interactions can include competition for resources, predation, and mutualism. The community concept emphasizes the interconnectedness and interdependence of different species within an ecosystem, highlighting the importance of biodiversity and the functioning of the ecosystem as a whole.