Day and night are caused by
a. the tilt of earth's axis.
b. earth's revolution around the sun.
c. eclipses.
d. earth's rotation on its axis.

The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?

Friction removes energy from objects in motion. which statement best describes how this works? a) friction transforms ke into thermal energy b) friction transfers thermal energy to ke c) friction transforms te into pe d) friction transforms pe into ke e) friction transfers ke into pe

Language is not the only way that humans communicate. describe how we use sound, touch, chemicals, and sight to communicate. need answer asap