An example of technology is the Select one:
a. addition of a side group to an organic molecule during synthesis.
b. use of a new antibiotic to fight an infection.
c. measurement of iron concentration in a water sample.
d. study of atomic fusion reactions.

Explain how plate tectonics have changed earth’s surface over time. include the role of plate tectonics in the creation of landforms.

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley

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.