What occurs during a solar eclipse ?

c and f

Explanation:

The moon will come between the earth and the moon...which also means the moons shadow will be on the earth's surface.Hope it helps:)

the first american roller coaster was the mauch chunk switchback railway, built in the mountains of pennsylvania in the mid-1800s. the track, originally built to send coal to a railway, was reconfigured as a "scenic tour."

prolly a beacuse the momentuem the car has increases while going down hill