Which of the Following May Result in a Positive Feedback

question 5

Multiple Choice

Which of the following may result in a positive feedback mechanism that would intensify climate change?

• A)A large volcano emits huge quantities of sulfate aerosols into the atmosphere.
• B)Warmer temperatures result in the melting of permafrost.
• C)Warmer temperatures result in increased evaporation of water,leading to an increase in cloud cover.
• D)An increase in rainfall results in increased plant growth.
• E)At higher temperatures,trees increase rates of photosynthesis.

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Definitions:

Reflected

The return of light, heat, sound, or energy from a surface.

Seismic Reflection Survey

A geophysical method for exploring Earth's subsurface by sending seismic waves and analyzing the reflected signals from subsurface structures.

Magnetic Survey

A geophysical method for mapping variations in the Earth's magnetic field, often used in mineral exploration.

Gravity Survey

A geophysical method for measuring variations in the Earth's gravitational field, which can indicate differences in the distribution of densities and hence the structure of the subsurface.