atmosphere is a present around the surface of the earth but it is not present around the surface of the Moon why​

tmosphere is a present around the surface of the earth but it is not present around the surface of the Moon because

This reduces the amount of gravity on the moon. Strong gravity is needed to hold an atmosphere into place. With weak gravity, gases that are emitted from the surface quickly are lost to outer space. Another reason is because the moon does not currently experience plate tectonics and geologic upwelling. Plate tectonics allows for a recycling of crust and convergence and divergence of plates occurs and this leads to volcanoes and gases escaping at the boundaries. The moon is said to be geologically dead.

velocity and height