7. The first man-made plastic was created
by Alexadner Parkes who publicly
demonstrated it at the 1862 Great
International Exhibition in London.The
organic material derived from cellulose
was called Perkesine.
Polythene was first synthesized by the German
chemist Hans Von Pechmann in 1898 just by
an accident. The first industrial synthesis of
polythene was discovered in 1933 by Eric Fwacett
and Reginald Gibson(again by an baccident)
42. SOIL POLLUTION
AIR POLLUTION
WATER POLLUTION
THREAT TO LIFE
THREAT TO BIO-DIVERSITY
THREAT TO THE ENVIRONMENT
CAUSE NATURAL DISASTER—TSUNAMI,
FLOODS,EARTHQUAKES,etc