Ecosystem

Definition

An ecosystem is a community of living organisms interacting with their physical environment. It includes both biotic (living) and abiotic (non-living) components that function together as a system.

5 Must Know Facts For Your Next Test

1. Ecosystems can vary in size from a small pond to a large forest.
2. Energy flows through ecosystems via food chains and food webs, starting with primary producers like plants.
3. Nutrient cycles, such as the carbon and nitrogen cycles, are crucial for maintaining ecosystem health.
4. Biodiversity within an ecosystem contributes to its resilience and stability.
5. Human activities, such as pollution and deforestation, can significantly impact ecosystems.

Review Questions

• What are the two main components of an ecosystem?
• How does energy flow through an ecosystem?
• Why is biodiversity important for an ecosystem's stability?

Related terms

Biotic Factors: Living components of an ecosystem, such as plants, animals, and microorganisms.

Abiotic Factors: Non-living components of an ecosystem, including sunlight, water, and soil.

Food Web: A complex network of interconnected food chains within an ecosystem.