Definition

1. Noun:
   • The regions of the surface, atmosphere, and hydrosphere of the Earth (or other planet) occupied by living organisms: The biosphere is the global ecological system integrating all living beings and their relationships, including their interaction with the non-living components of the planet (lithosphere, hydrosphere, and atmosphere). It is the zone of life.

Usage

• The term "biosphere" is used to refer to the sum of all ecosystems on Earth, the planetary system that sustains life. It describes the thin, life-supporting layer of our planet.
• It is a singular, countable noun, often used with the definite article "the" (e.g., ).

Examples

• Noun:
  • Protecting the biosphere is essential for the survival of all species.
  • Scientists study how pollutants move through the biosphere.
  • The biosphere includes everything from deep-sea vents to the highest mountains where life exists.

Advanced Usage

• "Biosphere reserve": A protected area designated by UNESCO to promote sustainable development and conservation of biodiversity.
  • The area was declared a biosphere reserve to protect its unique ecosystem.
• Conceptual usage referring to the totality of life on a planetary scale.
  • The theory explores how the biosphere regulates the Earth's climate.

Variants and Related Words

• Biospheric (adj): Relating to the biosphere.
  • Biospheric processes are incredibly complex.
• Biosphere 2: A famous, man-made closed ecological system built in Arizona, USA, used for research.
  • The Biosphere 2 experiment taught us valuable lessons about closed ecosystems.

Synonyms

• Ecosphere: Often used interchangeably with biosphere, emphasizing the ecological system.
• Life zone: A less technical term for a region supporting life.

Related Phrases and Concepts

• Gaia hypothesis: A scientific hypothesis proposing that living organisms interact with their inorganic surroundings on Earth to form a synergistic and self-regulating, complex system that helps to maintain and perpetuate the conditions for life on the planet (i.e., the biosphere).

Noun

1. the regions of the surface and atmosphere of the Earth (or other planet) where living organisms exist