Which Earth process best supports the claim that the geosphere enables the biosphere to exist?

• A. The absorption of sunlight by the atmosphere
• B. The movement of air masses causing wind patterns
• C. The cycling of nutrients through soil formation and weathering of rocks
• D. The evaporation of water from ocean surfaces

Answer: (C)

Verified step by step guidance

1. Understand the relationship between the geosphere and the biosphere. The geosphere refers to Earth's solid components, such as rocks, soil, and minerals, while the biosphere encompasses all living organisms. The geosphere provides essential resources and conditions for life to thrive in the biosphere.
2. Identify the Earth process that directly connects the geosphere to the biosphere. Among the options provided, focus on processes that involve the geosphere's role in supporting life, such as nutrient cycling and soil formation.
3. Recognize that soil formation and weathering of rocks are key geosphere processes. Weathering breaks down rocks into smaller particles, forming soil, which contains nutrients essential for plant growth and, consequently, for the entire biosphere.
4. Understand nutrient cycling. Nutrients like nitrogen, phosphorus, and potassium are released during weathering and incorporated into the soil. These nutrients are absorbed by plants, which form the base of the food chain, supporting all life in the biosphere.
5. Conclude that the cycling of nutrients through soil formation and weathering of rocks is the Earth process that best supports the claim that the geosphere enables the biosphere to exist. This process directly provides the resources necessary for life to thrive.