1. communities of living organisms interacting with each other and their physical environment
Usage: plural of ecosystem

Examples

• Forest ecosystems support countless species of plants and animals.
• Marine ecosystems are threatened by pollution and climate change.
• Scientists study how different ecosystems respond to environmental changes.
• Wetland ecosystems provide natural flood control and water filtration.
• Human activities can disrupt fragile ecosystems.
• Desert ecosystems have adapted to survive with very little water.
• The Amazon rainforest contains some of the world’s most diverse ecosystems.