Wheat, Wheat grass, Barley.
glutens
No.
No.
Preservatives and glutens
It can if you are allergic to glutens.
glutens either bad or good?
You can be allergic to the wheat, glutens or yeast in the carbohydrates, but I don't think you can be allergic to a carb.
Narural vegetation refers to the vegetation that grows by itself without any human intervention such as providing water. Vegetation refers to the vegetation which grows with the help of humans.
vegetation that is decaying
The vegetation is the forest.
Earthquakes affect vegetation by causing the vegetation to uproot. This may cause many vegetation to die off.
secondary vegetation is the vegetation which is not cleared and things are growing continuously and are not cutted.