Gaia Theory

Gaia Theory is a compelling new way of understanding life on our planet. The theory asserts that living organisms and their inorganic surroundings have evolved together as a single living system that greatly affects the chemistry and conditions of Earth’s surface.

Ecological Footprint

Your ecological foot print is the impact of a person or community on the environment, expressed as the amount of land required to sustain their use of natural resources, their lifestyle.

Calculate your Ecological Footprint here

Hydrologic Cycle


Carbon Cycle

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Nitrogen Cycle



First succession

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Food Webs

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An ecotone is a border zone, where ecological systems meet and mingle, sometimes forming a new and different community of species.

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Organization of levels

Individual : one member of species
Population: all members of species in an area
Community: all populations of organisms in area
Ecosystem: living community & it’s physical env. functioning together as an independent system
Biome: a major regional community, that is characterized by the plant life and climate (desert)
Biosphere: the portion of the earth where life exists

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