What is the controlling idea of the section "Read Algae—Nori"? Nori is a valuable product for the Japanese sea farming economy. Seaweed harvesting is much different from any other type of farming. Farmers follow many steps in harvesting nori. Another type of seaweed is called nori.

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explanation:

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i believe the answer is thesis, reasons, evidence, counterclaim, conclusion

answer: b (host)

viruses use the cells of living organisms to reproduce. the cell which is used by virus is called as "host cell". it is a living cell in which virus multiplies, example bacteria, plant or an animal cell.

in this, the virus is a parasite, which uses host cell for its benefit (reproduction) by using the cell machinary of host cell.

the direction of the magnetic field produced by an electric current will change when the direction of the electric current changes. for example : if a current is flowing in a straight length of wire, the magnetic field is described by a concentric circle (using right-hand rule).