Biology
Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 30.2, Problem 2TC
Summary Introduction

To explain: The effects on the global climate when the Montreal protocol had not been implemented and ozone-depleting chemicals continued to be released in ever-increasing amounts.

Introduction: UV (Ultraviolet) is an electromagnetic radiation with wavelength from 10 nm coming from the Sun and has a very damaging effect on living organisms. It is responsible for skin damage, aging, sunburn, and cancer. Ozone is a protective layer that filters about 97 % of the UV before it reaches the Earth’s surface.

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If there are many greenhouse gases, why is only carbon dioxide considered a cause of global warming?a. The other gases do not cause global warming.b. It isn’t. Scientists are concerned about other causes; for example, release of methane from melting permafrost could have significant effects on global warming.c. Other gases occur in such low quantities that they have little effect on the climate.d. Carbon dioxide is the only gas that absorbs long-wavelength infrared radiation.
Why is carbon dioxide the focus of so much attention regarding climate change? What are the main sources of carbon dioxide in the atmosphere and what can we do to reduce the amount of carbon dioxide in the atmosphere? Bring into your discussion the carbon cycle, a discussion of Venus and Mercury, the evidence for human impact on carbon dioxide levels in the atmosphere and its impact on climate (refer to any graphs you need to), and ways in which scientists have recommended limiting climate change.
Why is solar energy such an important factor for most ecosystems?
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