Friday, May 4, 2012

Amphibians can use which of the following for gas exchange? a. gills b. lungs c. skin d. gills and lungs e. all of the choices

Amphibians can use which of the following for gas exchange?
a. gills
b. lungs
c. skin
d. gills and lungs
e. all of the choices

Ans:
all of the choices
at

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