Molly is looking for a sustainable fuel source that doesn’t require technical equipment to harness. She is concerned that trees take too long to replace through reforestation. What alternative should she consider?
A. fossil fuels
B. geothermal
C. hydroelectric
D. biomass
E. tidal

Asample of a gaseous substance changes into a liquid

The summit of chimborazo, in ecuador, which is at a distance of about 6,384 km from the earth’s center. the bottom of the mariana trench, in the western pacific ocean, which is nearly 6,370 km from the center of the earth. on the surface of earth on the equator line.

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.