Hydrogen powered cars create less pollution than gasoline powered cars when driven. what might be a challenge to using hydrogen as a fuel?

What would happen to a volleyball left outside in the winter? o o o o a. it would expand. b. it would lose air. c. it would shrink. d. it would explode.

In which region is the substance in both the solid phase and the liquid phase? 1 2. 3 4 mark this and return save and exit next

The graph indicates the running route for tobias. which best describes his run? from time 0 to 6, he went fast and then slowed down. from time 6 to 10, he was at his slowest. from time 12 to 14, he went very slow. from time 14 to 18, he went toward the starting point.