humus
The whitefly could be the cause of the white, sticky stuff on the kumquat leaves. The white substance is called flocculent.
rotting stuff in garbage cans.
gas and other stuff are all made out of the stuff that comes out of the ground called petroleum.
It should be called coincidence.
Erosion makes stuff change because it is eating the stuff away or basically rotting. Just imagine you being erosion and the stuff its eroding is food.
They will be back.
If you find Brown spots that's either Its bruised or just rotting
Boils on the cattle
Yes they can because e-coli comes in almost all rotting stuff
Testator
it is sap
You can use something called 'sticky stuff remover' if there is any residual sticky stuff on your window. Sometimes this leaves a streak, but that can easily be got rid of with a bit of water i think.