What is the valency of Aluminium and nitrate in Al(NO3)3 ?​

Long term exposure to waves can cause sunburns and skin cancer. a) visible b) infrared c) gamma rays d) ultraviole

Which process transfers heat from inside earth to its surface? convection currents in mantle pulling away of tectonic plates drawing in of tectonic plates convection currents in crust

The biosphere of the earth is made up of what compound? organic or inorganic?