Suppose that geneticists developed a strain of bacteria that breaks down polyethylene, an otherwise non biodegradable plastic. how would such bacteria be useful? do you foresee any dangers from these new bacteria?

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?

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