?Match the term with the correct description.
A. ?the concentration of this gas increased from 318 ppm to 400 ppm between 1960 and 2015, primarily due to fossil fuel use
B. ?greenhouse gas emitted by human activities including livestock production, rice production, natural gas production, landfills, and the flooding of land behind large dams
C. ?potent greenhouse gas that has increased in the atmosphere primarily due to the increased use of fertilizers
D. ?this gas amplifies the warming effect of other greenhouse gases
E. ?suspended microscopic droplets and solid particles in the atmosphere
A. ?carbon dioxide (CO2)
B. ?methane (CH4)
C. nitrous oxide (N2O)
D. ?water vapor
E. aerosols
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The bond angles around the carbon atom in methane (CH4 ) are all:
A) 180° B) 120° C) 109.5° D) 90°
Which region of the earth has warmed almost twice as fast as the global average over the past 50 years?
A. Africa B. Pacific Ocean C. Indian Ocean D. Arctic E. Western Hemisphere
What is a demographic transition? What are its four stages? State why each stage is important and what the consequence is for population growth. Do all countries go through the demographic transition?
What will be an ideal response?
Erosion can result in a positive feedback loop because ________
A) the accumulation of humus makes erosion more likely B) the pH of the soil increases as erosion continues C) rainwater increasingly soaks into the ground D) greater weathering of parent material will occur E) plants are less likely to grow in eroded soil