If there is a difference, I am looking for a way to explain it to 6th graders

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What is drift? How is it different from selection? Why is it important in evolution?
3 1/3 divided by 1 7/12. Please solve step by step thank you. I want to learn how to do it step by step. I know the answer already. Thanks?
What do these plumbing symbols represent?
Predict the product of these reactions and balance them? Plz help!?
Physcis question ,lenses?

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Hello. can yall help me with one biology question. thank you?
After how many sec does the ball reach its maximum height?
What is the maximal height? after how many seconds will the ball hit the ground?
"Explain why the unit for volume is not considered a base unit"? Thank you for helping?
Is it possible that life started on Mars?
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