It should be side chain, by looking at a diagram online, idk if im right, but it looks logical.
Cross-cultural research stimulated by Vygotsky's theory reveals that adults begin to encourage valued skills as soon as children start school.
When you'r emotions or feelings come in to help with challenging problems
when you exercising with weights for a couple of day's you'r body get's used to what is going on. solving puzzle's helps you'r mind move faster
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A two year old can memorize faces, colors, social emotion, words and movement. They can actually memorize a lot for their small age. Of course they can't remember big details and such but they still can recognize small details.