Which one of the following theories of weight gain suggests that hypothyroidism is a cause for overweight or obesity?
a. fat cell theory
b. genetics
c. glandular disorder theory
d. set point theory

C. Grandular disorder theory

1. tetrapods are ( four-limbed animals ) . examples of tetrapods include (extanct and extinct amphibians , reptiles , and mammals )
2. Tetrapods first appear in the fossil record ( 367.5 ) million years ago .
3. Charles Darwin predicted that tetrapods evolved from ( a finned organism that lived in the water) . What observation leads do that hypothesis?( they have “fleshy fins” and “lobe fins”) .
5. Fish use ( gills ) to breathe underwater .