The answer is cohesion. The high surface tension helps the paper clip (with much higher density) float on water. The property of a liquid that allows it to resist an external force, due to cohesive nature of its molecules. Cohesion refers to the attraction of molecules for molecules of the same kind. Water molecules have strong cohesive forces due to their ability to form hydrogen bond with each other.
Answer:
we can see the shape of dna
Explanation:
The discovery of Lucy brought back to 3.2 million years the human presence on earth. She was found in Ethiopia in November 1974
