Short answer:
It has a "birth" (in the nebula) just like humans are born inside their mothers.
It gets older and changes(in color which is due to its Temperature and in Size) just like humans as they go from babies to adults to elders. They also both die (Stars exploded or become black holes) stars "die out" and humans literally die. Both can die(not literally for stars) from old age.
This question would be better placed under the Chemestry section
Answer:
DNA ligase,joins the okazaki fragments together into a single DNA molecule
(4) organisms in a changing environment must adapt to acquire necessary traits and survive
