What is the meaning of characteristics which are shaped by the environment

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

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.

The substances that are necessary for producing of certain hormones and that store and transport vitamins