Complex sentence: Such disasters are evidence of human-influenced ecological change and disruption to Earth's climate system, primarily through the emissions of green house gases, humankind has drastically altered the chemical composition of the global atmosphere, with profound implications for climate.
Split into simpler sentences: Such disasters are evidence of human-influenced ecological change and disruption to Earth's climate system, primarily through the emissions of green house gases. Humankind has drastically altered the chemical composition of the global atmosphere, with profound implications for climate.