Answer:
all living beings are made up of cells.
Cell is the most basic unit of life.
All cells must come from pre-existing cells
Explanation:
those are statements from the cell theory
A chemical messenger is any compound that serves to transmit amessage. A chemical messenger may refer to: Hormone, Long rangechemical messenger. Neurotransmitter, communicates to adjacent cells.
<span>EUBACTERIA...............................................
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The answer is punctuated equilibrium. This is a theory in evolutionary biology that says the evolution of different species proceeds in a characteristic way of relative stability for very long periods interspersed with shorter periods. During this period new species emerge as others become extinct.
