Why do you think UNESCO feels it is important for young people to be involved in heritage preservation and conservation? Give at least two reasons.

explanation:

allergens: overstimulate the nerve system

neurotics: attack nerve cells

mutagens: damage or otherwise alter dna sequence

generators: cause defects during growth and development  

carcinogens: cause unchecked cell growth

i hope you get the idea according to me these are the effects that happened.

the answer is d.index

answer; jewish immigrants;

answer; ancient times;