These compounds are produced as part of the life cycle of plants, marine organisms, insects, bacteria and fungi, as well as by atmospheric and geological activity.
(These compounds; are produced; as part of the life cycle of plants, marine organisms, insects, bacteria and fungi, as well as by atmospheric and geological activity)
These compounds
are produced
as part of the life cycle of plants, marine organisms, insects, bacteria and fungi, as well as by atmospheric and geological activity