The Earth System includes the core, mantle, and crust
This can also be labeled as the earth's Interiors
There is no set lifespan.It can live as long as the environment can support its life. However the average lifespan differs for each particular species, with an average life expectancy from a few days to a year or two.
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Answer:
The definition of a pure line is a result of inbreeding where animals or plants have certain characteristics that are the same through generations. An example of a pure line is the result of inbreeding of a certain flower to help it fight off diseases.
