They are cold blooded
They respire both by Skin and lungs.
They lay eggs in water ; they have a 3 chambered heart.
Panda's population and the animals that have risk of extinction. Dolphins, Whale, Shark and many more
<span>The globin chains of myoglobin and hemoglobin prevent the oxidation of Fe2 to Fe3 , which irreversibly binds oxygen. The cooperativity of oxygen binding in hemoglobin arises from electronic interactions between heme groups.</span>
The answer is the first choice
Answer:the fitness of an organism is the ability to survive and reproduce
Explanation:
