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Ecology
Science 8
Term | Definition |
---|---|
Population | All the individuals in a species who are together at a certain time and place. |
Community | All populations living in one place at the same time. |
Ecosystem | Environment. All communities of living organisms interacting with the environment. |
How do organisms survive? | The ability to respond and change to its environment. |
How do populations increase? | With enough food and shelter. No disease or predators. |
How do populations decrease? | Lack of food and shelter. Disease and predators. |
Producers (Green plants) | use light energy to produce (make) their own food. |
Consumers (Animals) | Eat energy rich foods. |
Herbivores | Eat plants only |
Carnivores | Eat animals only |
Omnivores | Eat plants AND animals. |
Decomposers(bacteria and fungi) | Eat wastes and/or dead organisms |
Energy chart of an ecosystem | sun, producers, consumers, decomposers |
Competitive interaction | Predator and prey |
Harmful interaction | parasites |
Beneficial interaction | species help other species survive |