What comprises the biosphere on Earth?

What comprises the biosphere on Earth?

• A. The solid ground and mountains
• B. The layer of gases surrounding the planet
• C. The area where all organisms exist
• D. The bodies of water across the planet

Answer: (C)

The biosphere is defined as the global sum of all ecosystems, where life exists on Earth. It encompasses all regions where organisms can thrive, including land (terrestrial), water (aquatic), and the atmosphere. This area includes diverse environments that range from forests and grasslands to oceans and rivers, making it the zone where living organisms interact with each other and their physical surroundings. Therefore, the area where all organisms exist accurately represents the biosphere. While the solid ground, the atmosphere, and bodies of water are essential components of the biosphere, they do not encompass the entire concept. The biosphere is not limited to just one of these elements; instead, it is the combination of all these environments where life is found. Thus, the correct choice emphasizes the unifying aspect of the biosphere as the habitat for all living organisms.

The biosphere is defined as the global sum of all ecosystems, where life exists on Earth. It encompasses all regions where organisms can thrive, including land (terrestrial), water (aquatic), and the atmosphere. This area includes diverse environments that range from forests and grasslands to oceans and rivers, making it the zone where living organisms interact with each other and their physical surroundings. Therefore, the area where all organisms exist accurately represents the biosphere.

While the solid ground, the atmosphere, and bodies of water are essential components of the biosphere, they do not encompass the entire concept. The biosphere is not limited to just one of these elements; instead, it is the combination of all these environments where life is found. Thus, the correct choice emphasizes the unifying aspect of the biosphere as the habitat for all living organisms.