لخّصلي

The Atmosphere (atmos-air; sphere-orbit, area)

atmosphere can be compared with the skin of the lemon or an onion with

many spherical layers.It also acts as a blanket that makes life possible on the earth by regulating temperature, absorbing toxic gaseous wastes, filtering harmful solar rays and facilitating water cycle.The thin layer of gases that envelops the Earth is held in place by the planet's gravity, Dry air consists of approximately 78% Nitrogen, 21% Oxygen, 1% Argon and other inert gases.It is a complex mixture of a number of gases, water vapours and a variety of fine particulate material

???????????????<- ??????

The Atmosphere (atmos-air; sphere-orbit, area)

atmosphere can be compared with the skin of the lemon or an onion with

many spherical layers.

It refers to the mantle of gases which surround our planet.

It is a complex mixture of a number of gases, water vapours and a variety of fine particulate material

الحاجات الاساسية

It consists of about 5.15 x 105 metric tons of gas which exerts a of about 1 kg per.cm². on earth's crust. pressure

Most of these gases are compressed in the lowermost layer. Pressure decreases due to lowering concentration of gases as we move upward.

← الضحون

It also acts as a blanket that makes life possible on the earth by regulating temperature, absorbing toxic gaseous wastes, filtering harmful solar rays and facilitating water cycle.

The thin layer of gases that envelops the Earth is held in place by the planet's gravity, Dry air consists of approximately 78% Nitrogen, 21% Oxygen, 1% Argon and other inert gases. Other gases present in earth's

atmosphere are referred to as-trace gases