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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem
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Changes in the Air To assess the impact of human activity on the carbon dioxide level in Earth’s atmosphere, it helps to take a long view. One useful data set comes from deep core samples of Antarctic ice. The oldest ice core that has been fully analyzed dates back a bit more than 400,000 years. Air bubbles trapped in the ice provide information about the gas content in Earth’s atmosphere at the time the ice formed. Combining ice core data with more recent direct measurements of atmospheric carbon dioxide—as in FIGURE 46.13—can help scientists put current changes in the atmospheric carbon dioxide into historical perspective.

Chapter 46, Problem 4DAA, Changes in the Air To assess the impact of human activity on the carbon dioxide level in Earths

FIGURE 46.13 Changes in atmospheric carbon dioxide levels (in parts per million). Direct measurements began in 1980. Earlier data are based on ice cores.

Was the rise in the carbon dioxide level between 1800 and 1975 larger or smaller than the rise between 1980 and 2013?

Summary Introduction

To determine: Whether the rise in carbon dioxide level between 1800 and 1975 was larger or smaller than the rise in between 1980 and 2013.

Introduction: The carbon dioxide concentration is rising and the present day concentration is highest in 15 million years. It is more as a result of human activities that contributed for the increase in carbon dioxide level in Earth’s atmosphere. The major contribution occurs by burning of fossil fuels that release high amounts of carbon in the atmosphere. The Industrial Revolution occurred as a transition with a dramatic increase in the carbon dioxide levels.

Explanation

Refer to Fig. 46.13, “Changes in atmospheric carbon dioxide levels (in parts per million)” in the textbook. The graphical representation shows the atmospheric carbon dioxide (ppm) measured from the deep core samples of Antarctic ice. As shown, the Industrial Revolution occurred around year 1800. According to the graphical data, the level of carbon dioxide after the occurrence of Industrial Revolution showed a dramatic increase...

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