Select the correct statement about the heart valves. a. The tricuspid valve divides the left atrium from the left ventricle. b. The mitral valve separates the right atrium from the right ventricle. c. The AV valves are supported by chordae tendineae so that they do not blow back up into the atria during ventricular contraction. d. Aortic and pulmonary valves control the flow of blood into the heart.

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.