cH 16 mb

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The most common way that modern ships transplant non native species to new environments is by

The ozone layer is vital to life on Earth because

The Kyoto Climate Change Conference agreed to reduce carbon dioxide emissions to zero by 2012

Climatologists estimate that the oceans absorbs about _% of the carbon dioxide released from burning fossil fuels

Data that support the theory that the Earth's average surface temperature is on the rise include

Possible effects of global warming inlcude

Greenhouse gases include

The significance of the June 1990 international ban on ozone depleting chemicals is that it showed that the international community