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STIMULENTS -
It makes a person more wakeful, alert and active.
(i) Caffeine ( C8H10N4O2) -
It is 1,3,7-trimethylxanthine obtained from tea leaves (Thea sinesis) dried beans of coffee plant (Coffea arabica) & dried seeds of cacao plant (Theobroma cacoa).
It is white, crystalline, bitter alkaloid.
(ii) Cocaine (C17H21NO4) -
It is benzoylmethylecgonine, extracted from dried leaves & young twigs of the South American shrub Erythraxylon coca.
It is taken for excitement.
(iii) Crack -
It is highly potent smokable derivative of cocaine.
May cause complications such as heart and nasopharynx damage.
Crack is sold as ridged lengths called teeth or french fries.
Exterrral and Internal Environment Let us try to understand the concept of environment with some examples. Can you identify the environment of a single carp fish in the pond? It
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