Please, help me to answer this question

> > On 7/3/05, Omar E. Vega wrote:
> > > Hi friends,
> > >
> > > I have not post for a long time because I did not
> > find anything
> > > interesting to contribute with, but I keep reading
> > you. I belong to a
> > > small group of Chilean Sci-Fi writers who is very
> > interested in
> > > science and tech, and that knows about this group.
> > Unfortunatelly
> > > most people of my generation, in my country, does
> > not speak English,
> > > so they ask me to be the interface with you.
> > >
> > > We have a big question that might help us to write
> > good tales.
> > >
> > > Imagine that suddenly -because the action of some
> > virus or whatever-
> > > all vegetal life of the planet die.
> > >
> > > Then question is. How long we will have oxigen to
> > breath? What
> > > would be the main ecological effects we would
> > observe? would the
> > > planet get hotter of cooler, becoming a new Venus
> > or a new Mars?
> > >
> > > We know that the planet current state is dependent
> > on life, and that
> > > a threat to plants would change the physical
> > aspect of the planet.
> > > How those changes would be and what secuence of
> > events they will
> > > follow?
> > >
> > > Please, help us to get the information to answer
> > those questions. And
> > > any help in the right direction will be very
> > appreciated.
> > >
> > > Thank you,
> > >
> > > Omar Vega,
> > > Chilean Sci-Fi writer.

in reference to the planet temperature - the amount of co2 and ch4
in the atmosphere would skyrocket - all plant life not recycling
carbon and also rotting producing methane. this should cause a super
greenhouse effect. >