What do the toxic chemicals used in paving roads, rocket fuel, and rat poison have in common? What do the toxic chemicals used in paving roads, rocket fuel, and rat poison have in common?

Answer: Arsenic

Explanation:. Arsenic, is found in several different chemical forms in paving roads-- - arsenic release from asphalt, rocket fuel-- - from combustion of fuel causing release of arsenic and carbon monoxide and among the composition of rat poison in different oxidation states, which can lead to toxicity called arsenic poisoning-- - which occurs when much arsenic is accumulated in the body causing acute and chronic adverse health effects, from diarrhea to cancer.