Mla style can protect writers from:

a) the necessity of using citations.
b) the necessity of using sources.
c) plagiarism

all persons entering into t

he employment of the compan

y, are considered as engaged

for twelve months, and those who leave

sooner, or do not comply with all these

regulations, will not be entitled

to a regular discharge.  

food chain i would say only because there is competition on getting food and survival