Answer:
sorry don't know the answer but i really need the points sorry
Explanation:
Explanation:
The lack of a control group
Answer:
The cell membrane is protective layer surrounding a cell.
Least dense means the one that is at the top. Wood floats on top of water, so wood would be the least dense. Water has a density of 1 and the others would all sink, so they're more dense. The answer is wood
