Answer:
Two lethal elements can combine to form an essential compound for health by undergoing a chemical reaction such that the properties of the individual elements are different from the properties of the product and are no more lethal
Example Mercury and Sulfur combine to form cinnabar which is used as a medicine to relieve pain, antiseptic, and to cure diseases
Mercury and sulfur combines because mercury readily combines with sulfur at high temperatures
Step-by-step explanation:
Mercury is a lethal element that also has harmful effects on the neurological system
Sulfur is lethal when too much of it is consumed