Explain how human emissions of carbon dioxide cause Earth's climate to warm
Increasing the concentration of greenhouse gases like carbon dioxide strengthens the greenhouse effect. As the surface of the Earth is warmed by radiation from the Sun, it emits heat energy. Greenhouse gases absorb this heat energy before it can pass through the atmosphere and back into space, raising the temperature of the atmosphere. When greenhouse gas concentrations increase, so does the temperature of the atmosphere and at the surface.
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According to Graph ?, what percent of the world’s population would be
affected by a ?-m rise in sea level? How about a ?-m rise? What will be an ideal response?
The GINI index assesses
A) the relative size of national ecological and carbon footprints. B) the attitudes of stewardship in various nations. C) the rate at which technology is affecting consumption patterns within a nation. D) the relative economic disparity within nations.
Which statement about lakes is true?
A. Stratified layers of lakes are characterized by vertical mixing. B. Stratification increases levels of dissolved oxygen, especially in the bottom layer. C. Lakes are more vulnerable than streams to contamination by plant nutrients, and toxic substances. D. Lakes have more flushing than streams. E. Changing of water in lakes takes days to weeks.
Urbanization
A. decreases temperature over the city center. B. increases rainfall over the city center. C. can raise or lower relative humidity. D. reduces levels of smog, especially in the summer.