Ecology Flashcards

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Ecology

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The study of the relationships between organisms and their environment, and the balances between these relationships.

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Biotic Factors in an Ecosystem

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Biotic Factors = Living organisms (Insects, Plants, Microorganisms, Reptiles, Mammals, Birds)

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Abiotic Factors in an Ecosystem

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Abiotic Factors = Non-living components (rocks, water, O2, CO2, soil)

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Biosphere

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A living globe that includes all areas of land, air, and water where life exists.

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Extent of the Biosphere

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Extends approximately 8 km above and 8 km below the Earth's surface.

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_______ is the ultimate source of all energy on Earth.

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The sun provides the primary energy source for Earth.

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producers

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Producers are organisms that convert sunlight into food.

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Examples of producers

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Plants and algae, such as seaweed and kelp, are examples of producers.

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Autotrophs

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Autotrophs capture energy from sunlight or chemicals to produce food. Autotrophs are also known as producers.

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Photoautotrophs

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capture energy from sunlight to produce food/sugars