Will mark brainliest aswer forbox 1 and box 2on top of the oval says a-u-g-g-c-a

In which layer of earth do most earthauakes occur a_ inner core b_outer core c_mantle d_crust

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?

What is a substance? a. a physical property of matter b. a chemical property of matter c. an element or compound that cannot be physically separated d. characteristics used to tell the difference between mixtures