For scanning a slide, power is usually used.
high or low

The correct answer is; low  

For scanning a slide, low power is usually used.

Low power scan is a scan that is done at 10X magnification to view the location of cells, or organisms. When a slide is viewed with low power, about 360 – 400 images can be contained in an entire slide with each image containing about 930 microns in the vertical direction, and about 695 microns in the horizontal direction. Low power is usually used for scanning a slide in order to view the content of the slide very clearly without missing any cell. The lower the magnification, the higher the view.

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answer; i believe the correct answer to the above question is ( friction)

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.