Unoxygenated blood from veins enters the right atrium then it goes down to the right ventricle then out through the pulmonary artery to the lungs where it becomes oxygenated blood which then enters the heart through the pulmonary veins and it goes to the left atrium and then is pumped down to the left ventricle and out through the aorta to the arteries where it travels to different organs and becomes deoxygenated and then the cycle repeats itself.
The data has to be verifiable by the scientific community.
The difference between cytoplasm and cellcytoplasm is jelly like fluid part of the protoplasm
It's A, a limiting factor is something that constrains the population size
The overall concept a clad organ aims to prove is evolutionary relationships among each organism.
