At the approved levels, the only known effect is a small improvement on dental health.
ok
"Polluttion" does not exist but pollution definitely does affect humans.
Magnesium Floride (MgF2)
no yes it is you have just spelt it wrong its Fluorine (F)
Water pollution can have many negative effects including killing aquatic animals, causing humans to become ill, disrupting food-chains, and destroying ecosystems.
Well hopfully it will purify water and might stop us getting our teeth getting brown stains.
The two effects produced by flowing water in a river are erosion, and a land formation known as a delta.
Benzene, chlorine, floride and nitrates and pesticides
When someone builds a drainage system it effects the water cycle is a couple different ways. It can make water transport to new places and humans could pollute the water system even more.
Poisoning, becoming very ill, genetic changes, cancer,etc.
There are many negative effects of the environment of endangered species. Some of these include water quality, natural disasters, and the presence of humans.
Typhoid,and Cholera are spread by water borne bacteria caused by humans drinking contaminated water.