Question

1.What are the advantages of organisms having a 4-chambered heartover less chambers?

2. The differences of Nitrogen waste elimination between mostaquatic animals, mammals, and birds.

3. Domarine fish drink seawater? If so, how do they regulate the saltintake?

4.Organisms like jellyfish, spongesand flatworms do not have a circulatory system or lungs. Whatadaptations do these organisms have for oxygen delivery?

Please explainanswer FULLY (2-3SENTENCES) for each question for full points and 5 starrating!