MEC 280 Midterm 1 - Mec280 1 The defniton oF “pollu±e”...

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Mec280 1. The definition of “pollute” is to make unclean, impure, or corrupt, as well as ____. Which of the 4 doesn’t belong? Regulate 2. In children, lead interferes with the development of the Brain 3. In ecosystems, organisms are in deadly competition with each other for evolutionary survival False 4. Nearly all solutions to pollution problems are political True 5. Which of the following is not true about ecosystems? Unlimited population size 6. Which of the following was the most deadly diseases during the year 1900? Infectious disease 7. An ecosystem is made up of organisms plus that part of the environment with which the organisms interact. True 8. The term “organisms” in an ecosystem refer to All of the above: animals, plants, microorganisms 9. The phenomenon in which 2 agents acting together create an effect greater than that predicted by knowing only the separate effect of the individual agent is known as Synergism 10. The phenomenon in which 2 agents acting together create an effect lesser than that predicted by knowing only the separate effect of the individual agent is known as Antagonism 11. If TFR <2.1 the population usually Contracts 12. One of the pollutants associated with the Owens Lake problem was Arsenic 13. Archeological records indicate that the 1 st homo sapiens appeared about 150 thousand years ago 14. The Industrial Revolution began in the early part of which century? 18 th 15. According to recent estimates the human carrying capacity of earth is 7-12 billion 16. When did human agriculture begin? 10,000 years ago 17. During agricultural period, diseases became more common by means of All of the above: transmission, accumulated wastes, diet changes 18. When approximately was the homo habilis evolved? 2.5 million years ago 19. Which among all species, is least similar to modern humans Homo habilis
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20. After about 25,000 years, the Cro-Magnon numbers had increased to around 5 million 21.
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