The temp. affects on how quickly these chemical muscles reaction can occur
Answer:heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic).
Explanation:
The system is responsible for the flow of blood, nutrients, oxygen and other gases, and as well as hormones to and from cells.
Answer:
made of nucleotides
Explanation:
They are the basic building blocks of DNA and mRNA.