Which answer choice best describes the difference between folded mountains and shield volcanoes?

folded mountains form only at divergent plate boundaries, whereas shield volcanoes form only at convergent plate boundaries.

folded mountains form only at convergent plate boundaries, whereas shield volcanoes form only at divergent plate boundaries.

folded mountains form when hot, fluid rock rises through thin spots in earth's crust, whereas shield volcanoes form when segments of earth's crust are bent and doubled over.

folded mountains form when segments of earth's crust are bent and doubled over, whereas shield volcanoes form when hot, fluid rock rises through thin spots in earth's crust.

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.

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.