Which statement explains something that the fossil record indicates? Earth is is still a very young planet
Mammals have always existed on Earth.
Mass extinctions have occurred several times on Earth.
The amount of water on Earth has decreased over time.
Please I only have 10 points.

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