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Who disagreed with Freud's concept of a "needy, dependent infant motivated by drive reduction" and promoted a "competent, motivated infant" who uses his/her primary caregiver as a secure base?
Unknown Substance
A material or compound whose identity, composition, or properties have not been determined.
Chemical Reaction
A process that involves rearrangement of the molecular or ionic structure of a substance, unlike a physical change that affects its physical properties only.
Products
Substances formed as a result of a chemical reaction.
Chemical Equation
A written representation of a chemical reaction, showing the reactants and products with their respective quantities.
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