Select the correct answer from each drop-down menu.
In a certain region, children are considered economic benefits. A rising trend in the fertility levels of the region is observed. Last year the fertility rate in that region was four children per woman. It is predicted that the fertility rate is going to be six children per woman due to increasing poverty.
If the predictions are true then the population of that region will , resulting in

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.

propane is burned to provide the heat in many cooking grills. the chemical reaction for this process is shown in the equation below.

c3h8 + 5o2 ? 3 co2 + 4h2o + energy

what are the products in this chemical reaction?

3co2 + 4h2o + energy

segmented body, an exoskeleton made from chitin, and joint appendages.