Growing willow for biofuel is sustainable development because it is a source of fuel which potentially will never run out. For every willow tree that is cut down, another can be planted in its place. This means that the source of fuel is potentially limitless and subsequently sustainable.
Answer: A.
Explanation:
The secondary growth of a plant happens in the vascular cambium. When the vascular cambium produces more tissues, it makes the stems thicker over time.
Answer:
A prokaryote is a simple, single-celled organism that lacks a nucleus and membrane-bound organelles.
The answer is ribosomes. Ribosomes produce proteins for the cell.
