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Multiple Choice
Which interaction between the atmosphere and the lithosphere most directly benefits the biosphere?
A
The reflection of ultraviolet radiation by the lithosphere protects living organisms.
B
The absorption of sunlight by the lithosphere increases Earth's core temperature.
C
The weathering of rocks by atmospheric gases releases essential minerals into the soil.
D
The movement of tectonic plates causes atmospheric pressure changes.
Verified step by step guidance
1
Understand the components involved: The atmosphere refers to the layer of gases surrounding Earth, the lithosphere is the solid outer layer of Earth (including rocks and soil), and the biosphere encompasses all living organisms.
Identify the interaction between the atmosphere and lithosphere that directly benefits the biosphere. This means focusing on processes that support life, such as nutrient cycling or soil formation.
Evaluate the options provided: Reflecting ultraviolet radiation by the lithosphere does not directly benefit living organisms, as this is primarily the role of the atmosphere (e.g., ozone layer). Absorbing sunlight by the lithosphere increasing Earth's core temperature is unrelated to direct biosphere benefits. Movement of tectonic plates causing atmospheric pressure changes does not directly support life processes.
Focus on the weathering of rocks by atmospheric gases. Weathering is a process where rocks break down due to exposure to atmospheric elements like oxygen, carbon dioxide, and water vapor. This releases essential minerals such as phosphorus, potassium, and calcium into the soil, which are vital for plant growth and, consequently, for the biosphere.
Conclude that the weathering of rocks by atmospheric gases is the interaction that most directly benefits the biosphere, as it provides essential nutrients for living organisms through soil enrichment.