Why is the water cycle important to life on earth?

the water cycle increases the amount of salt in the oceans.
the water cycle to clean the air we breathe.
the water cycle spreads water out evenly around the whole earth.
the water cycle continually cleans the water on earth.

Which of the following is a characteristic shared by both electron and light microscopes? a. they both employ the use of objective lenses. b. both microscopes require an internal camera to visualize the specimen. c. both microscopes have a resolving power of 0.01 nm. d. they both utilize white light to magnify the specimen.