Hich of the following observations BEST demonstrates water’s special property of cohesion? A. A spoon held near a stream of water from a tap deflects the water towards itself.
B. A rainbow forms after a rain storm.
C. Water forms droplets of dew on a spider web in the morning.
D. Water can dissolve other substances, such as sugar and salt.

the dark variety, as they are not visible on the dark tree barks

explanation:

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the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: