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While playing hide-and-seek with her brother,2-year-old Tammy hid her face behind a pillow,although she remained in plain view.This illustrates what limitation of preoperational thought?
Agricultural Technology
The application of technology and scientific methods to agriculture, aiming to increase efficiency, productivity, and sustainability.
Disease Prevention
Measures taken to prevent the occurrence of diseases and health conditions before they happen, including vaccination, lifestyle changes, and public health initiatives.
Contraception
Methods or devices used to prevent pregnancy as a result of sexual intercourse.
Pollutants
Substances introduced into the environment that cause harm or discomfort to organisms, often resulting from human activity.
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