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<p><a href="page.php?w=sea_level_rise">sea level rise</a>, glacial melting, <a href="page.php?w=Global_temperature_record">average global temperatures</a>, <a href="page.php?w=extinction">extinction</a> of species, and so forth.</p>

<p><big> Sources of greenhouse gases </big></p>
<p>Carbon dioxide enters the atmosphere through the mass burning of fossil fuels such as coal, natural gas, and oil along with trees, <a href="page.php?w=Municipal_solid_waste">solid waste</a>, and <a href="page.php?w=Biomass">biological materials</a>. In 2018, carbon dioxide was</p><p>
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