That will vary significantly depending on the toxic materials in the water, where the water is, if the water is treated, and many other variables. It could be anywhere from a few days to many millennia.
They will always remain toxic. A toxic chemical is a toxic chemical. Cyanide will always have the ability to kill you and will never, not be deadly.
The short term effect on Sandoz chemical spill is that it leads to water and soil pollution. In the long run it leads to the death of animals and plants.
It is important who will try to clean it
It's not as long as it's clean water.
Nope! Sorry. Water will not clean a penny. If a coin stays too long in water, it might rust.
Australia is not in any danger of running out of clean water anytime soon.
any water is good for a plant. as long as its not toxic
"Toxic chemicals" are any chemicals that are harmful to humans - and that includes a WIDE VARIETY of different substances. How long they exist will therefore depend on the specific chemical, and on the specific circumstances.
Actually most of the antioxidants are in the skin. As long as there is no mold and you clean off the skin, it should be perfectly healthy to eat.
This depends on many factors.
By putting water in a clean water bottle cap
-Any organic things in the sea such as dead fish or seaweed is broken down by bacteria -Thrown garbage -Toxic Materials are the things that keep it "dirty" as long as the ocean is away from these stuff it will be clean and people say that salt water can help not really sure of it but i will surely see :) hope i helped a bit :)