Which nations produce more of the earths pollution, more developed countries or less developed countries

Simple astronomical telescope the objective lens has a focal length of 75 cm and that of a piece of 5cm of the lenses are 18 cm apart when will be final image of a distant object before

The biome that includes evergreen trees is the forest biome.

Quiero una redaccion de yo soy medico y que tenga 10 lineas