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Frogs
Darwin's Frogs



Darwin's Frogs
Reading Level
     edHelper's suggested reading level:   grades 4 to 6
     Flesch-Kincaid grade level:   7

Vocabulary
     challenging words:    distensible, evolution, triangular-shaped, vaquero, offspring, aspect, temperate, hence, theory, selection, responsibility, merely, length, natural, laying, scientist
     content words:    Charles R.


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Darwin's Frogs   

1     Darwin's frogs are tiny amphibians. They grow to be only one inch long. They live in the temperate forests of southern Argentina and Chile. As their name suggests, Darwin's frogs were discovered and named after Charles R. Darwin. Darwin (1809-1882) was a British scientist. He is famous for his thoughts on the theory of evolution and natural selection.
 
2     Darwin's frogs have lengthened, pointy snouts and triangular-shaped heads. Their skin is greenish brown. They are decorated with occasional warts. As Darwin's frogs sing, their calls remind us of cowboys' whistles for gathering their herds of cattle. Hence, locals nickname Darwin's frogs "vaquero", a Spanish word for cowboy.

Paragraphs 3 to 4:
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Animal Themes
             Animal Themes


Amphibians
             Amphibians


Frogs
             Frogs


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