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Suppose that a child is shown two rows of 8 pennies each. In one row the pennies are laid next to each other; in the other the pennies are spread out with more space between them. Now the child is asked to count the number of pennies in each row and then respond to the question, "Which row has more pennies?" This demonstration is most likely to be used to test the child's:
Hazardous Substances
Materials that can pose a risk to human health or the environment when not properly managed, including toxic, corrosive, or flammable chemicals.
Hazardous Wastes
Hazardous wastes are substances that pose substantial or potential threats to public health or the environment due to their toxic, corrosive, reactive, or ignitable characteristics.
Nonhazardous Ones
Items or substances that do not pose a significant risk to health, safety, or the environment when used or disposed of properly.
Pure Resins
Highly purified substances produced by plants that are valued for their chemical properties and used in a variety of applications, including as adhesives, varnishes, and incense.
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