Organism are composed of many complex molecules. These molecules are composed mainly, hydrogen, oxygens , nitrogen sulfur and phosphorus

dna is made up of six smaller molecules -- a five carbon sugar called deoxyribose, a phosphate molecule and four different nitrogenous bases (adenine, thymine, cytosine and guanine).

weathering is the answer.

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

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