What useful purpose is served by cell division in a multicellular organism : select all the correct answers. A: to ensure that a cell does not become to large
B; To produce new cells during an organisms growth
C: To replace damaged cells and tissues
D: to ensure all cells remain undifferentiated

c

Explanation:

the main reasons cells duplicate is so they can replace damaged cells and tissues

the correct answer is:

a population changes in response to a change in the environment.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.