They are cold blooded
They respire both by Skin and lungs.
They lay eggs in water ; they have a 3 chambered heart.
I think the correct answer from the choices listed above is option A. The main function of structural adaptations is that they help the organism survive in its environment. These adaptations are physical features of an organism like the bill on a bird or the fur on a bear.
Answer;
D. Rift valley
Explanation;
-A divergent boundary also called the divergent plate boundary is a linear feature that exists between two tectonic plates that are moving away from each other. Most divergent plate boundaries are underwater (Iceland is an exception) and form submarine mountain ranges called oceanic spreading ridges.
-Divergent boundaries are areas where plates move away from each other, forming either mid-oceanic ridges or rift valleys.They are constructive boundaries. Convergent boundaries on the other hand are areas where plates move toward each other and collide.
The best and most correct answer provided by the question is HBr, the most powerful and dangerous acid. I hope my answer has come to your help. hope this helps and have a nice day!
