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What is responsible for heating the stratosphere? What about the ionosphere?
Language
A system of communication using sounds or symbols that enables us to express our feelings, thoughts, ideas, and experiences.
Gesture
A movement of part of the body, especially a hand or the head, to express an idea or meaning.
Object Permanence
The understanding that objects continue to exist even when they cannot be observed or heard directly, a critical cognitive development milestone in infants.
Cognitive Theorists
Scholars and researchers who study mental processes such as perception, memory, decision-making, and problem-solving.
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