Climate change has already occurred. Evidence that the melting of glaciers and ice sheets in the polar regions. Bleaching of corals. Sea level rise. Ecosystem change.
Climate change has occurred. The evidence is that the melting of glaciers and ice sheets in the polar region. The lettering of the Coral sea-level rise Ecosystem changes.
Climate change has already happened is the evidence of melting of glaciers and the polar ice in the area the whitening of coral reefs, sea level at higher system changes to house.