Humans are a very social species who essentially require interaction between them and other humans. We form societies so that we can divvy up work and get a lot done, while also satisfying the part of us that requires interaction. This is why we've formed languages; so we can communicate with one another and come up with cultures and ideas.
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there should be a comma after vacation
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Because he was so strict it made it even harder for him to show boo. Since boo is not a real human.
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At participation and performance in rigorous high school courses among California high school students, both overall and across demographic and racial/ethnic groups. While enrollment in rigorous courses has been increasing, particularly among students who are traditionally underrepresented in higher education. Here's my answer that I would put! =)
