Plants have evolved a taste for sand that deters hungry insects
Tastes beachyFlorapix/Alamy Stock PhotoBy Alice KleinGetting sand in your mouth is an unpleasant experience – and plants seem to know it. Emerging evidence suggests that some plants cultivate a sandy taste to deter herbivores from eating them. Grasses have particularly high levels of silicon – sometimes in excess of 10 per cent of their dry weight...
I regard the brain as a computer which will stop working when its component fail. There is no heaven or afterlife for broken-down computers. That is a fairy story for people afraid of the dark