The blood enters the heart from the venous circulation into the it is pumped through the tricuspid valve into the upon contraction, the tricuspid valve is shut and the blood is pumped through the pulmonary semilunar valve into the the blood is oxygenated at the lungs and is transferred back into the heart through the where it enters the the blood is then pumped through the bicuspid valve into the upon contraction, the blood is forced through the aortic valve into the entering arterial circulation.

selection list:
left ventricle
right ventricle
aorta
pulmonary artery
pulmonary vein
left atrium
right atrium

right atrium, right ventricle, pulmonary artery, pulmonary vein, left atrium, left ventricle, aorta

Explanation: Veins carry blood to the heart, arteries carry blood away from the heart. The atria of the heart are the small upper chambers of the heart that receive blood from the veins. The ventricles are the large lower chambers of the heart that send blood out through the arteries. The right side of the heart handles deoxygenated blood, the left side handles oxygenated blood. In most cases, veins carry deoxygenated blood and arteries carry oxygenated blood. However, those roles are reversed in the pulmonary artery, which carries deoxygenated blood to the lungs, and the pulmonary vein, which carries oxygenated blood from the lungs to the heart.

answer: grassland biomes are closer to the equator and receive more rain.

grasslands are biomes that are dominated by grasses rather shrubs and trees. savanna are biomes that exhibit grasses, shrubs and small tree as vegetation. grasslands are located near the equator of the earth. these are found in north america. savanna biomes are found in africa, south america, australia and india. grassland exhibit moderate climatic conditions, it receives   amount of rainfall higher than savanna.   therefore, savanna exhibit dry and hot climatic conditions.