Design a experiment that would address the testable question: Does the amount of sun affect how tall grass will grow? Be sure to include a hypothesis, control group, what quantitative and qualities data will be collected, and predictions. (can be made up data)

a compound light microscope is used to magnify objects in steps.  

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all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

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bioteacher101