It is called a semi-permeable membrane. Most eukaroytic cells have this.
The data has to be verifiable by the scientific community.
Hello Wtfiswrongwitmeh, using radiocarbon dating, or carbon dating, you can determine the age
of an organic object from the relative proportions of the carbon
isotopes it contains. Therefore, if you take the fossils form the fossil
record and determine how old they are, you can see how/if they evolved
over time.