Earth: An Introduction to Physical Geology (12th Edition)

Published by Pearson
ISBN 10: 0134074254
ISBN 13: 978-0-13407-425-2

Chapter 21 - Section 21.7 - Climate-Feedback Mechanics - Eye on Earth 21.3 - Page 656: 1

Answer

The destruction of tropical forests significantly impacts the composition of the atmosphere. Tropical forests, often referred to as "lungs of the Earth," play a crucial role in absorbing carbon dioxide (CO2) during photosynthesis. Trees and vegetation act as carbon sinks, sequestering CO2 from the atmosphere and storing it in their biomass and soil. When tropical forests are destroyed through deforestation, whether due to logging, agriculture, or urban expansion, the stored carbon is released back into the atmosphere. Trees and vegetation that once absorbed CO2 during their growth and development now decay or are burned, leading to the emission of significant amounts of CO2 and other greenhouse gases, such as methane (CH4) and nitrous oxide (N2O). This release of greenhouse gases exacerbates the greenhouse effect, trapping more heat in the Earth's atmosphere. Consequently, deforestation contributes to increased global warming and climate change.

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