The answer would be –genesis and –gram.
Suffixes that have a Greek or Latin roots and that are used
to combine with other words or parts of words are not called suffixes, these
kind of affixes are called combining forms.
One combing form is –genesis.
As an independent medical term, this means the origin of
something in medicine. When a doctor talks about the genesis of a contagion, he
or she is speaking of the point of origin of a contagion.
-genesis used as a suffix, can indicate a particular process
or pathogen. Example is parthenogenesis.
One combining form is –gram.
As an independent medical term, gram indicated the metric
weight of an object as a unit of mass. If nurses talk about how much serving of
food, they are talking about it in grams.
-gram signifies something written down. Example is
pictogram.
In ecology, allogenic succession is mediated by the abiotic components of the ecosystem, while the autogenic succession refers to the succession, which is mediated by the biotic components of an ecosystem.
A volcanic eruption wiping out an entire island is an example of allogenic succession.
A soybean crop helping in nitrogen fixation, leading to the development of other species is an illustration of autogenic succession.
A tsunami devastating all the living organism in a habitat is an example of allogenic succession.
Oak trees preventing the growth of smaller sun-seeking shrubs is an example of autogenic succession.
The making of replicas of the original fossils, is pretty much the say way, just different materials, in which the fossils originally have been formed and preserved.
When an organism dies, be it a plant or an animal, it gets fossilized only if very quickly after the death it is covered with sediments or mud. The sediments or the mud protect the plant or animal from the outside influences, so once it is kind of in a vacuum, or protective layer if you will, in which parts of the plant or animal that are long-lasting are preserved.
The clay and plaster used for the replica, work in the same way, because they wrap around the fossil tightly and isolate it from outside influences, with the result being different though, as they just make a copy of the fossil.
