Biology, 28.06.2019 23:00 emojigirl5754
Eukaryotes a. after oxygen producing prokaryotes b. after autotrophic prokaryotes colonized land c. before prokaryotes d. after prokaryotes, but before oxygen producing prokaryotes
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Biology, 21.06.2019 16:50
Pick twenty foods and research the amount of total carbohydrates, sugars, and other carbohydrates in them. note: most food labels have this information. record your findings.
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Waste water from industries and domestic sources can be treated by chlorination or ultraviolet radiation. there are pros and cons to using either chlorine or uv radiation to kill harmful microorganisms. what is one reason chlorination would be preferred over ultraviolet radiation? a) chlorine only eliminates visible impurities and is ineffective against microorganisms. b) chlorine not only kills bacteria but provides a residual effect on returning microorganisms. c) uv radiation can be used only to treat drinking water and is ineffective in treating waste water. d) ultraviolet radiation is more effective
Answers: 2
Eukaryotes a. after oxygen producing prokaryotes b. after autotrophic prokaryotes colonized land c....
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