Across
- 3. - The final, stable stage of ecological succession in a land ecosystem.
- 4. - Material broken down by weathering and transported by water, wind, or gravity.
- 6. - Succession that occurs in areas where an existing ecosystem has been disturbed but soil remains.
- 7. - The process of a body of water becoming rich in nutrients.
- 8. - Pioneer species that help break down rock to form soil.
- 9. - The process that breaks down rocks, contributing to sediment.
Down
- 1. - Organisms that can grow in nutrient-rich water, reducing oxygen for other aquatic life.
- 2. - The first species to colonize new or undisturbed land.
- 4. - The gradual process of ecological change in an ecosystem.
- 5. - Type of succession that occurs on new land with little or no soil.