Question

a. ******
is the largest contributor to the global warming.
b. Ionosphere reflects the low frequency
but absorbs the medium and hig
frequency waves.
c. The ...
movement of air is known as wind.
d. Meteors from space mostly burn up in
layer.
e. Bleaching of
is due to the loss of microscopic algae.
f. The U.S.A. banned the
** Sprays many years ago.
condenses into clouds and fog.
h. "Earth Summit' was signed by 154 nations to prevent
effects.
i. The term
... means the region of mixing.
j. The oceans serve as a
for carbon dioxide.
Name the cases released by the following
(5)
a Refrigerators
b. Coal Mining
c. Oceans and Soils
d. Burning of fossil fuels
Pesticides
.
3. Give answer in one word
(5)
A form of oxygen that protects life from the ultraviolet rays.
The ou
lavd
here
b.​

Answer 1

Answer:

China emits almost twice the amount of greenhouse gases as the US, which it surpassed in 2006 as the world’s top contributor to atmospheric carbon dioxide. Today, the country accounts for approximately 23 percent of all global CO2 emissions. The United States government estimates project that, barring major reform, China will double its emissions by 2040, due to its heavy reliance on fossil fuels for steel production and electricity.

Movement of Air The movement of air is mainly caused by the differences in pressure and temperature. Warm air is lighter and it rises upwards, meanwhile, cold air is denser and hence it moves down to replace the warm air. This phenomenon creates wind.