It is a fish of Oder that compromises catfishes.
The answer is: “Whales are more efficient at gas exchange than humans which helps them conserve energy.”
Answer:
They tend to show their evolutionary history or phylogeny
Explanation:
Vertebrates are animals that have backbone. During formation of zygote to foetus, they all pass through similar phase and look alike because their genes are similar. They share a particular trait and that is backbone. Generally, vertebrates all come from one family and their morphology is similar during pregnancy and only differ after towards 3/4 end of the pregnancy where each vertebrae have distinct characteristics of its species.
Cardiac Conduction System is a group of specialized cardiac muscle cells in the walls of the heart that send signal to the heart muscles causing it to contract.