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What does the graph tell us about the total food production and per capita food production over the past 50 years? A) Both have increased

Biology

  1. What does the graph tell us about the total food production and per capita food production over the past 50 years?
    A) Both have increased.
    B) While total food production has increased, there has been about the same amount of food per person for the past 30 years.
    C) They both shrank at the same rate.
    D) Total production has slowed down, but there is more food per person.
  2. Which of the following is a biological hazard?
    A) Earthquake
    B) Smoking
    C) Virus
    D) All are biological hazards
  3. A "vector" is defined as:
    A) A highly toxic, radioactive compound
    B) An organism that transfers pathogens to a host
    C) A compound with fire-retardant properties
    D) A compound that mimics natural substances
  4. Toxicity is:
    A) The study of the effects of poisonous substances
    B) Any toxic agent
    C) Any substance that causes environmental degradation
    D) The degree of harm a substance can cause
  5. A "teratogen" causes:
    A) Cancer
    B) Mutations
    C) Birth defects
    D) Problems in the hormonal system
  6. Why is research into endocrine disruptors controversial?
    A) Negative findings threaten the industry's economics.
    B) Research is still only beginning.
    C) Much research is funded by industry.
    D) All of these are reasons why research is controversial.
  7. A human-based study that compares a group of smokers to non-smokers to determine the effects of smoking is:
    A) An epidemiological study
    B) A case study
    C) Not likely to be funded
    D) Not going to tell about future risks
  8. If the "low" dose=5 units of a chemical, the "medium" dose=10 units, and the "high" dose=15 units, how much of the chemical is required to kill 50% of the study population?
    A) About 5 units
    B) About 10 units
    C) About 15 units
    D) You can't tell
    from the graph.
  9. Is it unethical for a country that has banned a chemical to manufacture and export it to other countries?
    A) Yes; if we won't have it in the U.S., we shouldn't make it.
    B) Yes, but the money we get from selling it will help our economy.
    C) No; let people decide what they want to do.
    D) No; in fact, chemicals should not be banned in the U.S. either.
  10. The picture shows a(n):
    a) Estuary
    b) Wetland
    c) Oxbow lake
    d) River delta

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