When bacteria decompose, they leave behind nutrients. These nutrient then filter unto the roots of the plants via the water that it sucks up. A loss in certain nutrients could be the death of this plant.
The answer is B. Cell membrane and cytoplasm
B and E are the right answers. If this question is not multiple choice, I think E is the best answer.
The answer is marcotting. This is for trees, shrubs and
semi-woody plants. The two cuts are then connected by a straight cut and the
bark is pried loose and removed. This involves pressing of a sharp knife
against the bark preferably as close as possible below a node, moving the knife
in circular motion around the stem.