One of the primary tools that demographers use to understand population is the age structure diagram, a graphic representation that shows the distribution by ages of females and males within a certain population. This...
This lesson discusses population growth, both in the United States and in the world. Topics include factors that influence population growth, such as government policy, religion, education or economic levels, energy use...
This lesson introduces students to the concept of toxic chemicals. Topics include a definition of the term 'toxic', factors that can affect the potential for a chemical to be harmful, and a brief overview of federal...
This lesson provides an introduction to the occurrence and possible risks of household chemical products. Topics include some basic chemistry (how elements combine to form compounds), how chemicals are classified, and...
This lesson discusses the question 'What is a mineral?' in the context of the guessing game 'Animal, Vegetable, or Mineral?'. It introduces a definition of the term, discusses the criteria used in the definition, and...
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