Answer:
They are naturally present in the atmosphere in the form of carbon dioxide and gaseous oxygen. Because they're always circulating between the soil, the air, and the water, living matter's constantly renewed. Atmospheric oxygen comes mainly from green plants.
<em>h</em><em>o</em><em>p</em><em>e</em><em> </em><em>i</em><em>t</em><em> </em><em>h</em><em>e</em><em>l</em><em>p</em><em>s</em><em> </em><em>u</em><em>h</em><em> </em><em>!</em><em>!</em><em>!</em>
Answer:
overall rising sea levels
Explanation:
it means the ice is heating up and melting into water and becoming part of the sea
