It began 3.5 billion years ago
Skin cells are made of proteins, water, and fat. But brain cells are only made up of amino acids, which ca make protein.<span />
Because of underdeveloped lungs the frog has to breathe through moist skin. Therefore for exchange of gases the skin is thin and moist
The largest sinus cavity is B. Maxillary Sinus
Answer:
The Answer would be AATGCG.
Explanation: The reason is because A pairs with T and C pairs with G.
