The Biosphere - The Biosphere 3.1 What is Ecology Key...

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The Biosphere 3.1 What is Ecology?
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Key Questions What is ecology? What are biotic and abiotic factors? What methods are used in ecological studies?
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The Biosphere The biosphere consists of all life on Earth and all parts of the Earth in which life exists, including land, water and the atmosphere.
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What is the extent of the Biosphere? The biosphere extends from about 8 km above Earth’s surface to about 11 km below the surface of the ocean.
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Levels of Organization within the Biosphere The Biosphere is divided into biomes.
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Biomes A biome is a group of ecosystems that share similar climate characteristics and similar organisms. Notice that biomes are arranged according to latitude!
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Biomes are divided into ecosystems All the organisms that live in a place, together with their physical environment, is an ecosystem. The Bear Paw Mountains create an ecosystem separate from other mountain groups, and from the grassland biome surrounding it.
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The ecosystems within the grassland biome The grassland biome
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