Can you explain what science notation is?

floods

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b. 20: 5

explanation:

20% of the worlds population lives in southwest asia, and less than 5% of the world's

land area.

chinese civil war took place over a long period of time between 1927 and 1950. the war was interrupted when japan invaded china in 1936 and by world war ii. the war was fought between the nationalist government of china, also called the kuomintang (kmt), and the communist party of china (cpc). 

the correct answer is d. the lengths of side sr and side s’r’ are in the ratio 1: 3.