the answer is D. Air will move from an area with higher pressure to an area with lower pressure :)
The answer is B.
I think its safe to assume we all have had a cup of ice water. The ice always floats at the surface of the water.
DNA is the main type of genetic material found in a cell. In addition, it is found in the nucleus of the cell, so (D) is correct. DNA in the nucleus is used in replication (through mitosis and meiosis) via daughter cells to continue cell growth.
