Answer:
emeralds
Explanation:
because its very tropical like trees
 
        
                    
             
        
        
        
4 potential escape routes you have inside the right atrium during passive ventricular filling.
<h3>What Is the Pathway of Blood Through the Heart?</h3>
There are four chambers in the human heart.
Mammals and birds have double circulation. 
The pathway of blood through the heart is as follows:
- The deoxygenated blood from the body is received in the right atrium from the vena cava and enters the right ventricle through a tricuspid valve. It enters the pulmonary artery through the semilunar valve and goes to pulmonary circulation.
- The oxygenated blood from the lungs is received in the left atrium from the pulmonary veins and enters the left ventricle through the bicuspid valve. It enters the aorta through a semilunar valve and goes to the systemic circulation.
To learn more about the blood circulation,
brainly.com/question/20710128
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A tissue.
Then a group of tissues that work together is an organ.
The a group of organs is an organ system.
A group of organ systems is and organism.