One illustration of that complex cycle is that animals, such as human beings, exhale carbon dioxide, which is absorbed by plants.
(One illustration of that complex cycle; is; that animals, such as human beings, exhale carbon dioxide) (that animals, such as human beings, exhale carbon dioxide; is absorbed; by plants)
One illustration of that complex cycle that animals, such as human beings, exhale carbon dioxide
is is absorbed
that animals, such as human beings, exhale carbon dioxide
by plants