What would be the effect on earth if the planet's axis were not tilted?

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?

The ability to make things happen is also called a. heat b. force c. matter d. energy

An electric power distributor charges residential customers $0.10 per kilowatt-hour (kwh). the company advertises that "green power" is available in 150 kwh blocks for an additional $4 per month. (green power is generated from solar, wind power, and methane sources.) if a certain customer uses an average of 391 kwh per month and commits to one monthly 150 kwh block of green power, what is her annual power bill