Why do larger animals require a circulatory system?Multiple choice question.Enzymes are made only by larger animals, and those enzymes must be efficiently distributed.Some cells with the body of a larger animal are too far away from the body surface for gas exchange.Larger animals employ a different mode of cell respiration.

In order to get adequate movement of gases, nutrients, and other chemicals in the body, most larger animals must have Multiple choice question.a circulatory system.a coelom.a digestive tract.a mesoderm.

Some invertebrates and all vertebrates have a circulatory system.

Do all living organisms require a circulatory system?

Describe two ways in which the circulatory system of a fish is different from the circulatorysystem of a mammal

The human circulatory system is more complex than the shark's:blood flows in two loops instead of one, andthe heart has four chambers instead of twoWe expect that the human system is better in some way because we wouldn't have evolved a complex system if a simple one would do.Explain how the human circulatory system might be better than the shark one. Propose why humans need a more complex system.