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What is the average mass, in grams, of one Rb atom
Newborns
Infants who are in the very first weeks of life, typically up to one month old.
Social Smiles
Smiles that are expressed intentionally by infants, starting around the age of 6 to 8 weeks, in response to interactions with humans, indicating early social communication.
Attachment
A deep and enduring emotional bond that connects one person to another across time and space.
Birth
The act or process of bearing or bringing forth offspring from the womb.
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