"waggy" <hon### [at] handbasketorg> wrote in message 
news:web.519fdce58856ea2f21be1230@news.povray.org...
> "s.day" wrote:
>> That thought had occurred to me, especially as when moss grows on rock it 
>> eats
>> away at the rock therefore adjusting the geology in it's own minor way..
>
> The action of moss, and lichen mentioned elsewhere in this thread, is not 
> minor
> over geologic time. It is a major element of "weathering", which also 
> includes
> wind and water action.
>

Tiny plants contribute to erosion and large plants inhibit it. Would be an 
interesting theme if someone could figure out a way to convey it.

 -Shay

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