Answer:
Environmental Tobacco Smoke
Newton’s first law had to do with inertia, which is a property that explains that something in motion will continue in motion unless stopped by a force of some sort.
“An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.”
Why dont you try asking google or a teacher to help you out?! :D
I thinks it's Genetics. I might be wrong tho
