How much power in the United States is produced by fossil fuels?
A) under 40%
B) about 50%
C) over 60%
D) 100%

During which phase does earth see more than half of the moon's surface? 1)first quarter2)third quarter3)waxing gibbous4)waning crescent

What is the difference between a scientific hypotheses and a scientific theory?

Which force diagram accurately represents a satellite in orbit around earth? image for option 1 image for option 2 image for option 3 image for option 4