- Life Sciences
the structure that separates the right ventricle from the pulmonary artery. It prevents the blood from flowing from the pulmonary artery back into the left ventricle during the general diastole phase of the cardiac cycle.
series of interlinked food chains by which energy circulates within an ecosystem.
the total amount of carbon dioxide produced by individuals, nations or organisations as a result...
organic compound that always contains the elements carbon, oxygen and hydrogen. The building...