A double circulatory system is composed of a <u>PULMONARY </u>circuit and a(n) <u>SYSTEMIC </u>circuit
Pulmonary circulation means where blood goes to lungs to get purified and exchange gases, i.e. CO2 is released into the lungs and oxygen is taken into the blood.
Systemic circulation is between heart and entire body, where oxygen is supplied to every cell of the body and CO2 is absorbed.
Hepatitis A virus because when a=x it means y
The correct answer is: choroid and retina.
The choroid is the part of the eye that provides oxygen and nourishment to the retina, which is the light-sensitive part of the eye.
The answer is c, a cell that has double the number of chromosomes.....
