State three ways in which crop rotation is important in crop production​

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?

List the path of the respiratory system

How many grams of mgbr2 are needed to produce 75g or metal?