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Unit 8 - 8th Grade
Ecosystems - Unit 8 - 8th Grade
| Question | Answer |
|---|---|
| Biodiversity | a variety of organisms in an ecosystem or biome |
| Climax Community | dominant community of plants and animals that come to live in an area |
| Ecological succession | the changing sequence of communities that live in an ecosystem during a given time period |
| Ecosystem | a community interacting with its environment through a one-way flow of energy and the cycling of materials |
| Equilibrium | a state of balance |
| Food web | a representation of several overlapping food chains in an ecosystem; includes the flow of energy from the Sun through producers to consumers and decomposers through multiple pathways |
| Limiting factor | a condition or resource that keeps a population at a certain size |
| Natural disaster | physical geographic events that cause damage and loss of life |
| Niche | the unique role or job of an organism in an ecosystem |
| Pioneer species | first organisms to live in an area |
| Primary succession | a process that develops a biotic community in a previously uninhabited and barren habitat with little or no soil |
| Secondary succession | a process started by an event that reduces an already established ecosystem to a smaller population of species |
| Sustainability | ability to maintain ecological processes over long periods of time; ability of an ecosystem to maintain its structure and function over time |
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