Tectonic plates often shift position by the force of liquid rock emerging from below the Earth’s surface and then cooling to form hard rock. This most often occurs .

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.

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.

b. to discover aspects of the natural world.

hopefully i .

the correct answer in apex is tissue development, i know because i just had this question