BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 44, Problem 2CT
Summary Introduction
To explain:
The decrease in the amount of vegetation contributes to the rise in the atmospheric content of carbon dioxide.
Introduction:
Vegetation is a term that includes all plants from evergreen forests to grass land. Plants convert atmospheric carbon dioxide into oxygen through the process called photosynthesis. During photosynthesis plants use sunlight, water and carbon dioxide to produce sugar and oxygen.
Carbon dioxide is one of the “greenhouse gases” that causes global warming.
Increased level of atmospheric
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- Describe at least two ways that human activities are altering air quality.arrow_forwardCarbon dioxide is a greenhouse gas. What is the definition for “greenhouse gas” ?arrow_forwardThe carbon cycle is nature’s way of reusing carbon atoms, which travel from the atmosphere into organisms in the earth and then back into the atmosphere over and over again. Most carbon is stored in rocks and sediments, while the rest is stored in the ocean, atmosphere, and living organisms. Evaluate the carbon cycle model. Predict the changes that would occur within the carbon cycle as a result of deforestation. Choose all that apply A) there would be less carbon in the soil due to the loss of trees B) there would be an increase in atmospheric carbon due to less plant respiration C) there would be an increase in atmospheric carbon due to decreasing photosynthesis D) there would be an increase in oceanic carbon due to increasing atmospheric levels E) there would be an increase in atmospheric carbon due to increased emissions from burning of treesarrow_forward
- What will the continued depletion of the ozone layer most likely cause? an increase in skin cancer among humans a decrease in atmospheric pollutants an increase in marine ecosystem stability a decrease in climatic changesarrow_forwardGasping for Oxygen Explain how each of the following contribute to dissolved oxygen decline in aquatic ecosystems: Rising water temperatures slowing streams organic pollutants/eutrophicationarrow_forwardCarbon dioxide in the atmosphere traps heat. Scientists are concerned that too much carbon dioxide is being released into the air by human activity. Using your knowledge of the carbon cycle, where do you think this carbon dioxide is coming from? List at least three possible sources of human-related carbon dioxide production. Carbon dioxide is produced by the burning of fossil fuels.arrow_forward
- The layer of the atmosphere where the ozone layer is located?arrow_forwardModel/diagram the sources and sinks of carbon in the global ecosystem. You will need to create TWO models/diagrams of the sources and sinks of carbon. In the first model diagram the sources and sinks of carbon in a natural, pre-industrial landscape. In the second model, diagram the sources and sinks of carbon in a landscape altered by human activity and industry. Finally, write a few short sentences on what you would expect the atmospheric levels of CO2 to be in each model and why they would or would not be similar.arrow_forwardDeforestation is the clearing of Earth's forests on a massive scale, often resulting in damage to the quality of the land. Forests still cover about 30 percent of the world's land area, but swaths the size of Panama are lost each year. Deforestation on such a large scale has a dramatic effect on the carbon cycle. Which of the following describes the effect large scale forest clearing will have on the carbon cycle?arrow_forward
- Research the air pollutants below. Explain: what is the source of each pollutant? What is its effect on human health? What is its effect on the environment? What measure are being taken to reduce each emission the atmosphere? CO (Carbon monoxide) SO2 (Sulfur dioxide) NOX (Nitrogen Oxides) VOCs (Volatile Organic Compounds) Particulate Matter Pb (Lead)arrow_forwardWhich of the following statements about the carbon dioxide emitted to the atmosphere by human activities each year is most accurate? a. About half of it remains in the atmosphere and the other half is split equally between uptake by the oceans and vegetation. b. Nearly all of it remains in the atmosphere. c. About half of it dissolves in the oceans. d. On an annual basis, human-caused emissions of carbon dioxide are small compared to volcanic emissions. e. Human-caused emission of carbon dioxide is much greater than that emitted by respiration of all plants, animals, and microorganisms.arrow_forwardHow does the increase in Carbon Dioxide levels impact our Coastal Ecosystems and Economy?arrow_forward
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