At 12:38 2000-04-20 -0700, I wrote:
>>Aluminium is very common in most soils...

At 12:38 2000-04-20 -0700, Jean-claude wrote:

>There is a world of difference between elements presents in soils and their
>presence in plants . Plants don't suck out every minerals present in soil

That was not what I was thinking of. Of course!
But it is impossible to avoid getting some soil in the stomach together with
plants, especially roots. Ancient teeth have scratchmarks showing that
our ancestors also ate soil.

- Hans