global warming

it is a shield that protects the earth from the sun radiation

• green house

• ozone layer

• ozone gases

the location of ozone layer is in:

• troposphere

• stratosphere

• mesosphere

• earth surface

ozone hole formed by breaking down of:

• CFCs

• CO2

• O2

• H2

CFCs mean:

• carbohydras compounds

• chlorofluorocarbons compound

• hydrocarbon compounds

the ozone layer formed of :

• O

• O2

• O3

the CFCs molecules destroy the ozone after they broken down by:

• UV light

• IR radiation

• light waves

the ozone layer is located near to the poles.

• true

• false

more concentration of O3 prevents the sun radiation to reach to earth surface

• true

• false

less concentration of O3 , prevent the sun radiation to reach to earth surface

• true

• false

the sun radiation reaches earth surface through :

• ozone layer

• ozone holes