Answer:
formation of a precipitate
Explanation:
When two salt solutions are mixed, an observable reaction is seen when two types of ions attract each other, they clump together and fall to the bottom of the container as a solid precipitate.
Answer:
dumping of wastewater is an example of water polution.
Explanation:
water polution is when an alienated foreign contaminent is put into a water source either intentionally or accidentally
<span>The correct answer is b. Radon. Oxygen, Hyrdrogen, and Boron, are not radioactivel ike Radon and it regenerates quickly meaning that even though it has a short half-life period, it stays for a long time once released. It also has no taste so it's difficult to notice without proper gear because you can't feel it.</span>
