Why are a variety of instruments needed to measure change in the climate system? A) A different type of instrument is needed for each different climate. B) The climate system involves a number of different factors that are measured differently. C) Climate is determined over a number of years, rather than a short period of time. D) Change in climate requires the results of the different instruments measuring the same factor compared. E) Different areas have developed different instruments to measure climate change.

you are certainly talking about this picture:

a: is the label of the white square, it is showing the  replication fork, formed by helicase (d) ==> so it is the site of dna separation and replication 

b: is a new dna brand that is following directly the replication fork, so it is continuous ==> built continuously from 5' to 3

c: dna polymerase cannot replicate dna on its own, it needs the of their proteins, and one of them plays the role of a clamp which fixes  the dna with the dna template and increases  the processivity of the enzyme. ==>   stops polymerase from falling off the  template.

d: is the enzyme responsible for forming the replication fork (helicase) ==> unwinds and separates dna into two strands

e: is the delayed strand, it is built  in the opposite sense of the helicase, so dna will be built in fragments ==> built  fragments from 5' to 3 joins

and finally f: is the enzyme that builds  the new dna strand (dna polymerase) ==>   adds nucleotides to make a new dna helix.

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d. the weight of the book

population. population is the number of people or animals in a particular place. an example of population is over eight million people living in new york city.

here is your answer hope i .