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Birth explosion. Birth Control. Technological innovations. Death Control.
great progress agriculture our soil productivity
a; a the; a the; the a; the
There will be no place the same as our Earth. There will be many places, better than our Earth. There will be some planets which may be suitable for our human being to live. There will be a planet for man to be used as home in the near futur
a; a a; the the; a the; the
limited renewable nonrenewable productive
only a burden to the human society the result of the rapid growth of population more harmful than beneficial not likely to slow down
common epidemic unknown untreatable
it enables us to survive in the closed system of a spaceship it is a modern science that everybody has to learn it can be learned quickly if we study it hard it helps us to understand the relationship between living beings and the environment
problem mystery question point
result account reason increase
it is easy to do harm to our environment the planet on which man lives is too small for man to survive man should not create his culture and civilization too rapidly man does not want to admit the danger of what he has done to the environment
man cannot avoid destroying the environment man cannot obtain resources he needs from other planets man cannot survive for a long time man cannot help to create a new environment
is, many, are is, large, are are, large, are is, much, are
a; a a; the the; a the; the
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