1. Where did the word "atom" come from? 2. How did Mendeleev's decide to organize his table 3. Why is today's periodic table shaped the way it is? 4. What would cause the shape of the periodic table to be changed again? 5. Use the periodic table to fill in the blank squares on the following table:

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the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?