One theory about the origins of relief printing in China focuses on chops, seals made by carving calligraphic characters into a flat surface of jade, silver, gold, or ivory. Another theory focuses on the practice of making from inscriptions carved in stone.

Inked rubbings  

Explanation:

Inked rubbing was first found by Chinese people before the seventh century to make other print of old records by the use of paper and ink. Rubbing is also called squeeze the ink. With the help of this ink, squeeze make other copies and distributed them in considerable numbers. This technique was developed simultaneously in china.  

So that in the above context that another theory focuses on the practice of making inked rubbing from the inscription carved in stone

the answer is true .

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.