Ccording to the fossil record, five took place, which lowered the variety of species found on earth today.

Rank the torques on the five doors shown in the figure above from least to greatest. note that the magnitude of all the forces is the same

The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.

In an experiment, how can i change human errors? be specific.