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5 Written questions

5 Matching questions

  1. bonding between two elements
  2. 5 natural resources in LA
  3. pH
  4. Fish kill
  5. Do good/no harm
  1. a Ionic bonds will form between a metal (a positive ion) and a nonmetal (a negative ion.) Electrons are transferred—one gives up and one gains an electron.
    Covalent bonds will form between two non-metals (negative oxidation numbers.) Electrons are shared—neither atom will give up its electrons.
  2. b This encourages plant and algae growth. When the plants and algae die, bacteria break them down. The bacteria use oxygen to do this and the oxygen levels go down. Animals and other organisms that live in the water die from lack of oxygen.
  3. c (1) Oil and natural gas, (2) Fish and shellfish, (3) Salt and sulfur, Fur-bearing animals: (4) & (5) muskrat, mink, raccoon
  4. d Tells how something is acidic or basic - organisms live in a narrow range of it
  5. e to give thoughtful consideration to our actions; consider how our actions may affect the world we all share

5 Multiple choice questions

  1. Loss of wetlands as areas is filled for subdivisions. Increased nutrients in waterways from lawn fertilizers and herbicides, increased disposal of waste, further loss of wetlands as services (shopping centers, utilities, etc. move to area to provide for increased population
  2. the process of an unstable nucleus breaking down by releasing alpha, beta or gamma radiation; as the unstable nucleus decays it becomes more stable.
  3. part of an experiment used to compare the "experimental group" to. It is the "Normal" condition, or it does not contain a form of the independent variable.
  4. Some organisms need varying salinities at different times in their life cycles
  5. • You can develop radiation poisoning and the more amounts of radiation you absorbed, the more sick you will get. It can become fatal if too much is absorbed

5 True/False questions

  1. ProtonAn electrically charged atom that ha gained or lost one or more electrons


  2. Compounda pure substance composed of two or more elements chemically combined.


  3. Salttype of wetland; Covered by water year round; Trees :Bald cypress, water tupelo often draped in Spanish moss. Animals: Crawfish, choupique, herons, ibises, egrets)


  4. Eat-outcoastal regions where salt water mixes with fresh water from rivers, rainfall, and runoff; includes intermediate, brackish and salt marshes, Some organisms need varying salinities at different times in their life cycles


  5. How can non-native species (nutria) can effect and ecosystem?Because they are non-native, they have no natural enemies to control their numbers. They create a problem in the marsh because they eat the marsh grasses and dig up the roots. The roots keep the soil stable. When they are destroyed, the plant dies and the soil erodes away more easily.