BB and Bb would be blue because they are both dominant and bb would be green because it is recessive
Cells don't grow very big because they have to be able to diffuse through material easily. Also, when cells are small and plentiful they are easy to replace when damaged.
Buildup of organisms means that the species number is pretty high.
Gradual change means that it was a slow, calm time to make the change.
I hope this helps!!
They add nitrogen to the soul through their nodules !
