Ais a push or pull that one object exerts on another.
a.
force
c.
displacement
b.
position
d.
reaction

answer:

Carbon monoxide gases are released into the atmosphere when volcanoes erupt.

Explanation:

When eruption of valcanoes occurs, several toxic gases are released into the atmosphere such as carbondioxode, sulfur dioxide, carbon monoxide, hydrochloric acid and hydrogen sulfide. When these gases reaches to clouds it mixes with water and falls on the earth in the form of acid rain and causes skin disease.