Which of the following statements about tolerance range is true?
a tolerance range is different for different organisms
b. the tolerance range is the total number of organisms that can be supported by an ecosystem.
c. tolerander range is affected by biotic factors in an ecosystem
d. the available water supply does not impact an organism's tolerance range

B i think

Explanation:

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.

cell division is not regulated in tumor cells.