18. The Biosphere
The biosphere must exist within the other
3 spheres.
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19. The Gaia Hypothesis
The Gaia Hypothesis believes that the
Earth is able to act like a living being.
Mother Earth
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20. The Gaia Hypothesis
As a living being, the Earth can react to
changes in or around it and regulate itself
over time.
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21. The Gaia Hypothesis
The Gaia Hypothesis is not fact, but the perception of Earth as
a living thing promotes awareness and stewardship for Earth.
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