Answer:
All you have to do is list the sources you used to answer the last 8 questions, and if you did no use any, leave it blank.
Explanation:
Telomeres are protective sequences of nucleotides found at the ends of chromosomes,Which become shorter every time a cell divides.
A gradual degeneration of an organism occurs, resulting in ageing.
However, some cells are able to replenish their telomeres using the enzyme telomerase.
Hope this helps! :)
Answer:
D) a scientific journal about chemistry and a biography of a famous chemist
