Refraction is the bending of light (it also happens with sound, water and other waves) as it passes from one transparent substance into another. This bending by refraction makes it possible for us to have lenses, magnifying glasses, prisms and rainbows.
Here you go, and i hope you have a good day too :)
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Answer:
All living cells contain ribosomes, tiny organelles composed of approximately 60 percent RNA and 40 percent protein
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The correct answer is that the yolk provides nutrients for the embryo. Hope this helps.