What does a cell membrane do in a Euglena organism.
No multiple choice!!

Buuy which of the following did you include in your response? organs perform specific functions in the body to keep it alive. organelles perform specific functions in cells to keep them alive. done

Where do the respiratory and circulatory systems meet? a. in the heart b. in the muscles c. in the lungs d. in the brain

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer