2007-12-11 13:41:30 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
We cannot, because there is no definition of zero. Does zero mean that they're not there? Or does it mean that they're there, but we cannot detect them?
Also, peanuts contain minute amounts of cancer-causing chemicals called aflatoxins. One cannot get rid of them. Shall we ban peanuts, peanut butter, and peanut oil?
The wisest word on this subject was said by Paracelsus in Basel in 1550: "Poison is in the dose." By this he meant that any thing is poison if one takes too much of it.
The important thing is not to be scared because some professor wants to get himself into the newspapers by discovering the newest dangerous thing. Also beware of professors who have discovered cures for every thing. ("Scientists find new cancer-fighting foods!")
Do what you always have done. Every thing in moderation. Nothing in excess.
2007-12-11 13:58:48 · answer #1 · answered by steve_geo1 7 · 0⤊ 0⤋
No. Many pollutants occur naturally, so by having tolerance levels we can try and discriminate between natural and man-made pollution. For example, many groundwater sites in India exceed the WHO levels for mercury, but it is all natural.
2007-12-11 21:45:40 · answer #2 · answered by Geologist Greg 5 · 0⤊ 0⤋
yes, we should have..
but do you think its possible to achieve?
2007-12-11 21:48:11 · answer #3 · answered by Fian 4 · 0⤊ 0⤋