A wheelbarrow is not an example of a pully
An animal cell has a nucleus but no cell wall.
Answer:
B) build wind-powered pumps to use groundwater
The one that helps identify leaves as monocot or dicot are the characteristic of their veins. In a monocot, leaves have parallel veins or parallel venation; whereas, dicot leaves have a network of veins or reticulate venation. Hope this is the answer that you are looking for. Have a great day!