Thinking question: Why do you think plants need those THREE things in order to survive? Does it remind you of anything else?
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2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

Which of the following electromagnetic waves can create ions?

How can one make a supersaturated solution? (apex)