How is the height of a wave measured? a. from trough to water level b. from water level to crest c. from crest to trough d. from wavelength to trough

The right answer is; C. from crest to trough

A wave is the upward and downward movement of water which can be caused by tides or wind. The height of a wave is usually determined by measuring the vertical distance between the crest and trough. The crest is the highest point of a wave, while the trough is the lowest point of a wave. Wave height is usually measured in feet or meters.

ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'