Which of the following situations violates the law of conservation of energy? 1)A ball dropped from the top of a building increases in speed until it hits the ground.
2)A block sliding freely on level ice increases in speed until it hits a wall.
3)A child playing on a swing moves fastest at the bottom of the swing's path.
4)The height a ball bounces decreases with each bounce.

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.

fossil's are like over rated rocks like low key not gonna lie i don't get why we can't just call them old rocks like for real i mean i call my grandpa and grandma that smh