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Abiotic/ Biotic
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Abiotic
• Non living factors in an ecosystem, that an organism depends on.
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Air• Atmosphere – contains Nitrogen 78%
Oxygen 21% • CO2 O2 in photosynthesis
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Water• Most organisms are 80% water• Greater diversity with more water
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Soil• Mixture of sand, silt, clay, and organic
substance – source of nutrients• Has many layers and may contain living
things in it.
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Sunlight• Life requires energy – common source is
the sun• Sunlight determines season change
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Temperature• 0- 50°C – most desirable temperature• Temperature depends on elevation and
latitude
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Climate• Weather over time• Allows living things a consistent and
predictable environment.
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Biotic
• The living or once living things in an ecosystem.
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Dead Things
• Bones, Sticks, Leaves, Grass, Etc.
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Living thing cause:
• Disease
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• Predation - Food
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• Protection
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Ecology Notes
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Biosphere• entire portion of the
earth that is inhabited by life.
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Ecology
• Study of interactions that occur among organisms and their environment.
Eco – Homes
Ology – Study of
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Ecosystem• Interaction of
living things with their non – living environment.
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• An organism’s home or shelter.
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1.Individual - One single organism of a species
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2. Population- All the organisms of a species in a specific area
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3. Community - All the populations in a specific area
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4. Ecosystem- All the living and non living things in an area
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5. Biomes - major types of communities and ecosystems that
are typical of broad geographic regions
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6. Biosphere- Sphere of earth that comprises of all living things
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Example
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Food Web – interconnection of plants and animals
Food Chain – follow a single path
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Autotrophs - make their own food (plants)
Heterotrophs – can’t make their own food (animals)
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Producer – food source ( Plants, Bacteria)
Consumer – Eats producers or consumers ( dog, grasshopper, humans)
Decomposers – Breaks down consumers and producers ( Maggots, Mushrooms, Vultures)
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Herbivore – Eats plants only (deer, cow)
Carnivore – Eats animals only (lion)
Omnivore – Eats Plants and Animals (bear, humans, birds)