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Things that are natural are not made by people and they occur naturally in the environment. Things that are manufactured are built by people and are mostly modelled after natural structures. Natural and manufacture are both opposites to each other.
Chromatin
- not made by people - occur naturally in the environment
oalification converts wood into lignite, a process in which internal wood structures can be preserved. Petrification also preserves the original wood structures. Petrification is traditionally known to occur through two preservation processes.
Gaps occur because of the alignment.
flexure lines
mold is found on foods, wood, plastic and building structures.
Intercostals.
Chickenpox lesions occur on skin. They can't occur on eyelashes, but can occur on skin-covered or mucous membrane-covered structures of or near the eye.
May 6th 1937, at Lakehurst, New Jersey
Flexure lines
There are more structures etc. and people.