What occurs naturally between organisms living in an environment with limited resources.

Not all of the individuals survive or reproduce.

Explanation:

With limited resources, there are scarce food, sexual couples or land available to settle. In consequence, this is explained by the theory of Natural Selection. This theory exposes that it is a phenomenon of evolution that is defined as the differential reproduction of the genotypes of a biological population.

source: On the Origin of Species. Charles Darwin. Available at: http://darwin-online.org.uk/content/frameset?itemID=F373&viewtype=side&pageseq=1

structure is maintained and sustained by:

-cytoskeleton: gives cells coherence

-cell wall: support

-cytoplasm: shape

hope this .

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