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19 Cards in this Set
- Front
- Back
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Define abiotic |
The non living parts of an ecosystem |
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Define biotic |
The living parts of an ecosystem |
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What are the four spheres that make up the earth |
Lithosphere Biosphere Atmosphere Hydrosphere |
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Briefly describe each sphere |
Lithosphere- hard part of the earths surface Hydrosphere- all the water found on earth Atmosphere- the layer of gases above the earths surface Biosphere- the regions of earth where living organisms exist |
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What are nutrients |
Chemicals needed by living things |
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What are the nutrient cycles |
Carbon cycle Water cycle Nitrogen cycle Phosphorus cycle |
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Briefly describe the carbon cycle |
Carbon- moves from the atmosphere to the biosphere and back again. Enters the lithosphere where after millions of years remains are converted into fossil fuels returning carbon dioxide back into the atmosphere |
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Briefly describe the nitrogen cycle |
Nitrogen is converted into usable forms. In terrestrial ecosystems, bacteria concerts nitrogen into ammonium In aquatic ecosystems nitrogen is also converted into ammonium |
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Briefly describe the phosphorus cycle |
Phosphorus is stored in the lithosphere. Stored in rocks on the ocean floor. Through weathering phosphorus is released into the soil |
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Briefly describe the water cycle |
Water moves between the hydrosphere and atmosphere. The Sun's rays evaporate water from the earths surface, the water vapour then condenses. Clouds then form water droplets which falls back to the lithosphere as precipitation |
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What is photosynthesis |
A process that changes solar energy into chemical energy |
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What is cellular respiration |
Process by which all life uses energy |
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Food chain// trophic levels |
Back (Definition) |
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What is a niche |
An organism job in the ecosystem |
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What are the relationships in ecosystems |
Predator prey Parasite Mutual up Commensalism |
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Define a parasite |
A parasite uses another organism to provide food and habitat |
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Define mutualism |
A relationship beneficial to both organisms |
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Define Commensalism |
No benefit to either organism |
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Cellular respiration equation |
Back (Definition) |
