The lunar eclipse is the natural process that occurs at certain time intervals, where the moon is covered by the shadow caused by the earth. In other words, in a lunar eclipse, the earth is between the moon and the sun, preventing the sun's rays from reaching the moon and imposing a shading that causes the moon to darken.
In this case, we can say that the geometry of the lunar eclipse is: sun - earth - moon.
Cellular respiration that proceeds in the absence of oxygen is anaerobic respiration. Cellular respiration that proceeds in the presence of oxygen is aerobic respiration.