A group of organisms that depend on one another in a local environment is called
O a habitat
O an ecosystem
an economic system
a civilization
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answer; (a) he was a u.s senator for 38 years;

no because we were not ready for war

c. troops marched forward in close formation against newer, more accurate weapons

you didn't list the options. however, a few communist countries today are: the people's republic of china, north korea, and cuba.