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Movie theatres charge different prices to different groups of people according to the differing marginal costs that exist from group to group.
Toxin
A poisonous substance produced within living cells or organisms; can be harmful or fatal if absorbed by the body.
Prenatal Development
The stage of human development that occurs from conception until birth, encompassing physical, cognitive, and emotional changes in the embryo and fetus.
Embryonic Stage
The period in prenatal development from about 2 to 8 weeks after conception, where major organs and structures begin to develop.
Germinal Stage
Refers to the first two weeks of prenatal development after conception, characterized by rapid cell division and the beginning of cell differentiation.
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