A system formed by the interaction of organisms and their environment is called a(n) _______.

A natural unit of organisms interacting with each other and the physical environment may otherwise be called a(n) ______ ; Your answer here;. Fill in the blank space

The system's reaction to an event is called a(n ) _______ .

An organism interacts with its environment to obtain energy and/or nutrients. This interaction is known as the organism's _____ to its environment.Multiple choice question.surroundingsevolutionresponse

A multicellular organism that has a mouth and lives in an animal host is a(n) _____.

A(n) Blank______ is formed by specialized cells of a single type that are organized to perform a particular function.Multiple choice question.organismorgan systemtissueorgan