In order for the respiratory system to maintain homeostatic tissue levels of oxygen and carbon dioxide, it must coordinate constantly with the system.

The answer is the cardiovascular system. The circulatory system, additionally called the cardiovascular system or the vascular system, is an organ system that grants blood to flow and transport supplements, oxygen, carbon dioxide, hormones, and platelets to and from the phones in the body to give sustenance and help in battling sicknesses, settle temperature and pH, and look after homeostasis

Because the earth is not round ,but it may seem round when viewed from ,our planet but true some points earth is not round was an oblate spheroid -a square that it squashed as globe however is not even a perfect oblate spheroid.in fact isaac newton's first proposed that earth was not perfectly round but it was an oblate spheroid instead.that mean a square that is squashed as its poles and swollen at the

The reactants are co_{2} aka carbon dioxide and h_{2}o aka water along with light energy