What might be a use for fluorescence in situ hybridization (fish)?
a. for identification of a specific gene in a dna extraction by hybridization to a dna probe
b. for identification of a specific gene by hybridization to a dna probe within live cells that have had their dna denatured by heat
c. for identification of an mrna within an rna extraction by hybridization to a dna probe
d. for identification of both mrna and dna in cellular extracts using an rna probe
e. none of the above

answer: - few nutrients

high pressure

low temperatures

explanation: 1. few nutrients:   open-ocean zone is located way far from the land, which is the main source of the essential nutrients.2. high pressure: pressure increases by 1 atmosphere for every 10 meters increase in depth.3. ample sunlight: a large fraction of the sunlight is reflected back to the atmosphere from the sea surface. 4. varying salinity: below the thermocline, the water is isolated from the atmosphere so the salinity remains stable over the year.5. low temperatures:   the temperature of open-ocean zone ranges from a low of -2°c to an average of 17°c

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

i hope this : )

b is the correct answer