Geovanna Morales

There isn't as long a life expectancy in Ecuador as in Korea.
The life expectancy of Korea is 78 years. In contrast, that of Ecuador is 73 years.

There isn't as high an infant mortality rate in Korea as in Ecuador.
The infant mortality rate of Ecuador is 21/1.000. In contrast, that of Korea is 4/1.000.

There isn't as high GDP in Ecuador as in Korea.
The GDP of Korea is 20''' dollars. In contrast, that of Ecuador is 54.7'' dollars.

There isn't as high an unemployment rate in Ecuador as in Korea.
The unemployment rate of Korea is 33%. In contrast, that of Ecuador is 8.7%.


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Geovanna, this is the correction of your sentences:

There isn't as long a life expectancy in Ecuador as in Korea. CORRECT
The life expectancy of Korea is 78 years. In contrast, that of Ecuador is 73 years.CORRECT

There isn't as high an infant mortality rate in Korea as in Ecuador.CORRECT
The infant mortality rate of Ecuador is 21/1.000. In contrast, that of Korea is 4/1.000.CORRECT

There isn't as high GDP in Ecuador as in Korea. (as high a...)
The GDP of Korea is 20''' dollars. In contrast, that of Ecuador is 54.7'' dollars.CORRECT

There isn't as high an unemployment rate in Ecuador as in Korea.CORRECT
The unemployment rate of Korea is 33%. In contrast, that of Ecuador is 8.7%.CORRECT


You only forgot an article (a).