You have to find the similarities and differences of intrusive and extrusive igneous rocks for the first question. The second one requires you to find out coarse-grained rocks are formed, the third is asking how igneous rocks are classified according to its structure, like the construction of the rock(what it is made up of). The fourth is asking you how fine grained-igneous rocks are made basically, the fifth is asking you how do igneous rocks with that glossy fine stain, how are they made.
I remember answering this question. The answer would be Option B. Chitin, in arthropods, is a structural carbohydrate that forms their exoskeleton. It is a long chain of polymer of an N-acetylglucosamine. Hope this answers the question.\
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Rosalind Franklin. She obtained images of DNA using X ray crystallography.
We don’t have enzymes that can break down cellulose.
Both pH and Heat effect catalase function therefore we will measure the function based upon changing these variables.