Answer:
In my opinion, I think its 2
Explanation:
Answer:
Petrochemicals are chemical products derived from petroleum, although many of the same chemical compounds are also obtained from other fossil fuels such as coal and natural gas or from renewable sources such as corn, sugar cane, and other types of biomass.
DNA
sorry if it’s wrong, but that answer seems reasonable
Replicating experiments
(If u don’t mind can y mark me brainiest it would really help :) )