“10 –a-day from now ‘til May”

  1. True statements about ozone include which of the following?
  1. It is a pollutant in the troposphere.
  2. It filters out most of the UVC radiation in the stratosphere.
  3. Most of it is formed in the stratosphere by reaction between carbon dioxide and free oxygen atoms.
  1. I only
  2. II only
  3. III only
  4. I and II only
  5. I, II, and III
  1. Which of the following actions would reduce global greenhouse emissions?
  1. Increasing the use of automobiles
  2. Decreasing the number of nuclear power plants.
  3. Replacing coal-burning power plants with wind farms
  4. Converting tropical forests to rice paddies
  5. Switching from hydroelectric power generation to power generation using natural gas as the primary fuel
  1. Losses of usable energy between successive trophic levels in an ecosystem are best accounted for by which of the following?
  1. The first law of thermodynamics
  2. The second law of thermodynamics
  3. The law of conservation of matter
  4. The process of ecological succession
  5. Limiting factors in the ecosystem
  1. Overgrazing of grasslands can lead to reduced range quality. Two of the major effects of overgrazing are
  1. Erosion and desertification
  2. Higher fire potential and increased productivity
  3. Higher primary productivity and ammonification
  4. Eutrophication and increased methane production
  5. Soil compaction and subsidence
  1. Which of the following describes the heat-island effect?
  1. Urban areas trap more heat than rural areas do.
  2. Tropical islands reflect heat back into the atmosphere.
  3. Warm water in the Pacific causes excessive evaporation into the atmosphere.
  4. Lakes retain heat and provide warmth for landmasses nearby.
  5. Rapid decomposition in swamps releases a large amount of heat.
  1. A home uses ten 100-watt lightbulbs for five hours per day. Approximately how many kilowatt-hours of electrical energy are consumed in one year by using the lightbulbs?
  1. 365
  2. 1,825
  3. 5,000
  4. 10,500
  5. 365,000
  1. Factors that affect the total fertility rate of a human population include which of the following?
  1. Cultural traditions
  2. Government policies and economic incentives
  3. Education level and economic opportunities for females
  1. I only
  2. II only
  3. I and II only
  4. II and III only
  5. I, II, and III
  1. Alligators in a Florida lake polluted by high levels of dioxins (chlorinated hydrocarbons) had low testosterone levels and failed to reproduce. Scientists came to the conclusion that the dioxins were acting as which of the following?
  1. Endocrine disrupters
  2. Growth hormones
  3. Carcinogens
  4. Immune-system suppressors
  5. Mutagens
  1. The half-life of radon gas is approximately four days. Four weeks after the introduction of radon into a sealed room, the fraction of the original amount remaining is closest to
  1. 1/2
  2. 1/8
  3. 1/32
  4. 1/64
  5. 1/128
  1. Lakes that are characterized by high water clarity and low concentrations of dissolved nutrients are classified as
  1. Buffered
  2. Climax
  3. Eutrophic
  4. Oligotrophic
  5. Stratified