How are teratogens related to critical periods? Teratogens have varying impacts during different stages of development. O Teratogens cause critical periods of development. Critical periods of development contribute to teratogens. O Critical periods are rarely affected by teratogens.

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Substance Abuse

Substance abuse refers to the use of illegal drugs in excessive quantities, as well as the misuse of legal substances such as prescription or over-the-counter pharmaceuticals or alcohol for purposes other than those intended. Drug addiction, also known as substance use disorder, is a disease that affects the brain and behavior of a person. It leads to a failure to control the use of any drug or prescription, legal or illegal.