Before
Brazil's great land rush, the emerald rain forest Rondonia state were unspoiled
showcase for the diversity life of diversity. In territory south of the Amazon,
there was very much hardly a break in the canopy of 2oo-feet tall trees, and virtually
every acre was alive with the cacophony of all kind of insects, birds and monkeys.On, 1970s, came the settlers of swarms , slashing and burning swaths
through the forest to create the roads, towns and fields. As far as we know, soil
that supported a rich rain forest is not well suited to corn and other crops,
and mostly the newcomers can eke out only an impoverished and disease-ridden
existence. While on the process, they are destroying an ecosystem and the millions of
species of plants and animals that live in it. An approximately 2o% of Rondania's
forest was gone, and at present rates of destruction, it will be totally wiped
out with 25 years.Don't they?
Nearly every habitat is a risk. Forests in the
northern hemisphere have fallen to lumbering, acid rain .Resulting, Marine
ecosystems around the world are threatened by pollution, and overfishing in the coastal
development. It is in the topics, that the battle to preserve what scientists
call biodiversity will be won or lost. Tropical forests cover only 7th% of the
earth surface, but they house between 50% and 80% of the planet's species.
Despite the alarm
with which scientists view this trend, probably the biodiversity has just surfaced on the
world's political agenda. Problems of high-profile animals such as tiger
and rhino grab public attention, while mny people hardly see the point of
worrying about insects and plants.Do they? But extinction is the one environmental
calamity that is irreversible. As a result lowly species disappear unnoticed, they
take with them and hard-won lessons of survival encoded in their genes over many years.
Humanity
already benefits greatly from the genetic heritage of little known species. Approximately 25% of the pharmaceuticals in use in the U.S. today contain ingredients derived from wild plants.Don't they? Hidden anonymously in clumps of vegetation
about to be bulldozed or burned might be plants with cures for still
unconquered diseases. Janzen said "I know of three plants with the potential to treat AIDS'.
Finally, the unfortunate reality is that many habitats
are not going to be saved. While preventing the genetic legacy of those areas from
being extinguished and as many species as probably should be preserved in zoos,
botanical gardens and the other gene banks. probably the scientists can study a
small percentage of threatened organisms and have the options of later
returning them to the wild or transplanting some of their genes into other
species.
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