What does the Gaia Hypothesis posit about the planet?

• A. It is a random collection of organisms.
• B. It acts like an organism, reacting to changes and maintaining balance.
• C. It is primarily a lifeless rock.
• D. It only supports human life.

Answer: (B)

The Gaia Hypothesis, developed by scientist James Lovelock, posits that the Earth functions as a self-regulating, complex system, much like a living organism. This hypothesis suggests that the interactions between living organisms and their inorganic surroundings contribute to the maintenance of conditions that are conducive to life. Essentially, it indicates that the planet has intrinsic mechanisms that adjust to changes in order to sustain life, reflecting a dynamic equilibrium within the biosphere. This perspective highlights the interconnectedness of all life forms and their environments, promoting the idea that Earth's biological and physical systems work together to create a stable, life-supporting environment. The idea of the planet acting like an organism emphasizes the importance of ecological interdependence and the feedback loops that regulate environmental stability.