Why isn't the whole world rich? In this chapter we could see that there are things that rich countries have in common and things that poor countries have in common. It would appear the secret to having a long term growing economy is not a secret at all. If that is so, why aren't all the poor countries applying the secrets to themselves and becoming rich?

because the blacks were already poor, and 1977 was the year most slavery came to an end. so most white people were already rich. and also, some others arent because they dont try to be.

Explanation:

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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.