D4.2

3. The increase in toxin concentration as it moves up successive trophic levels.
4. The process where nutrients are washed out of the soil by rainwater, often into water bodies.
5. Strips of habitat connecting fragmented populations to allow for movement and genetic exchange.
7. Nutrient enrichment of water causing algal blooms and oxygen depletion.
9. A species that has a disproportionately large effect on its environment relative to its abundance.
10. The variety of life in the world or in a particular habitat or ecosystem.
11. The clearing of forests which leads to habitat loss and increased atmospheric carbon.

1. The ability of an ecosystem to maintain its biological processes and biodiversity over a long period.
2. A famous New Zealand example of ecological restoration through natural regeneration of native forest.
6. An experimental tool that allows for the control and manipulation of variables in a small ecosystem.
8. The critical threshold at which a small change can push an ecosystem into a different state.
12. Environmental impacts or changes caused specifically by human activity.