Answered: What are the most causes of global…

Applications and Investigations in Earth Science (9th Edition)

9th Edition

ISBN:9780134746241

Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Chapter1: The Study Of Minerals

Section: Chapter Questions

Problem 1LR

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Question

What are the most causes of global climate changes an how has human activities contributed to these changes.?

Expert Solution

Step 1

The greenhouse gases act as an umbrella above the earth and soak up infrared radiation. Some of this radiation is radiated back to the earth and re-radiated as visible light and heat radiation. The main greenhouse gases are methane, water vapour, ozone, carbon dioxide etc. The downward movement of radiation is called greenhouse flux. As a result, the environmental temperature increases the surface level. This process is termed the greenhouse effect.

If the total amount of greenhouse gases in the atmosphere is big, then it would retain more and more infrared radiation. It results in the enhanced greenhouse effect and is also termed global warming. The variation in global climate is driven by global warming.