Praxis Elementary Education: Science (5005) Practice Test

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What do ecosystems consist of?

Only living organisms

Only non-living components

Both living organisms and their physical environment

Ecosystems are complex networks that consist of both living organisms, such as plants, animals, fungi, and microorganisms, and their physical environment, which includes non-living components like soil, water, air, and climate. This interaction between living and non-living elements creates a dynamic system where energy flow and nutrient cycling occur.

Understanding this interdependence is crucial because it illustrates how organisms rely on their environment for shelter, food, and resources, while non-living factors play a significant role in shaping the ecosystem's structure and function. Both living and non-living components are essential in maintaining the balance and sustainability of ecosystems.

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Only plants and animals

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