Scientists never say a theory is proven or not they only say if the evidence what

The study of witch tree monkeys feed in is part of the science life

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?

May someone me with these science questions