Question

explain why large animals require a circulatory system in brief????????​

Answer 1

It's all because of the fact that living cells need oxygen, and the body needs a good way to get the oxygen to those cells, which is why circulatory systems are important in all animals, and an especially large and complex circulatory system is important in large animals.

Answer 2

It's all because of the fact that living cells need oxygen, and the body needs a good way to get the oxygen to those cells, which is why circulatory systems are important in all animals, and an especially large and complex circulatory system is important in large animals