Yes and no. Water can be dangerous if there are really big waves. Water can be safe if you are with someone.
Any body of water can be dangerous.
yes it can be dangerous
Water reacts with water and isn't dangerous (the equilibrium dissociation of hydrogen into hydronium and aqueous hydroxide).
Yes they are dangerous as the water can flood buildings
Treated tap water is not dangerous (If you do not get into it).
Yes if you define dangerous. Water is dangerous in the presence of potassium metal.
You can drown!
Water boatmen believe is the family Corixidae. These insects are flat, boat-shaped and long. These insects are not dangerous.
Dirty water is dangerous because its got loads of dirt in it which has LOADS of germs in! Would you want to drink that? No
Generally water-soluble chemicals are more easily absorbed in your body and thus could be more likely to be dangerous to you
It's not as long as it's clean water.