Multiple Choice
Why is river water typically less clear at the mouth than at the source?
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48. Ecology
Introduction to Ecology
Multiple Choice
How has recent climate change most directly impacted specific humidity in the atmosphere?
A
It has decreased specific humidity by reducing the amount of water vapor the air can hold.
B
It has had no measurable effect on specific humidity worldwide.
C
It has increased specific humidity due to higher global temperatures causing more evaporation.
D
It has caused specific humidity to fluctuate randomly without any clear trend.
Verified step by step guidance1
Understand the concept of specific humidity: Specific humidity refers to the amount of water vapor present in the air, expressed as a ratio of the mass of water vapor to the total mass of air.
Recognize the relationship between temperature and evaporation: Higher global temperatures increase the rate of evaporation, which adds more water vapor to the atmosphere, thereby increasing specific humidity.
Analyze the impact of climate change: Recent climate change has led to a measurable increase in global temperatures, which directly influences the amount of water vapor the air can hold.
Evaluate the options provided: Consider each statement in the problem and compare it to the scientific understanding of specific humidity and its relationship with temperature and evaporation.
Conclude that the correct answer is: 'It has increased specific humidity due to higher global temperatures causing more evaporation,' as this aligns with the established scientific principles of how temperature affects water vapor in the atmosphere.
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