The narrow zone of contact between land, water, and air that supports life
Explanation
The Earth system is composed of four constituent domains: the Lithosphere (land), the Hydrosphere (water), the Atmosphere (air), and the Biosphere (life). These domains interact to sustain the planet's environmental balance.
Detailed Analysis:
- The gaseous layer surrounding the planet is incorrect: The gaseous layer surrounding the planet is termed the Atmosphere. It provides the air necessary for respiration and protects the Earth from harmful solar radiation.
- The narrow zone of contact between land, water, and air that supports life is correct: The Biosphere is the narrow zone of contact between the land (lithosphere), water (hydrosphere), and air (atmosphere). It is in this zone that life exists. It is unique to Earth and contains all living organisms, ranging from microscopic bacteria to large mammals.
- The solid crust of the earth is incorrect: The solid crust or the hard top layer of the earth is termed the Lithosphere. It is made up of rocks and minerals and is covered by a thin layer of soil.
- The aggregate of all water bodies on earth is incorrect: The domain of water is referred to as the Hydrosphere. It comprises various sources of water and different types of water bodies like rivers, lakes, seas, and oceans.
Key Takeaway:
The Biosphere is the global ecological system integrating all living beings and their relationships, formed by the intersection and interaction of the Lithosphere, Hydrosphere, and Atmosphere.