Rocks and other materials are neither created nor destroyed. however, they change from one form to another.” in your own words, justify this statement with the of a model.

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.

Write down two additional questions about earth's magnetic field that will make your presentation more informative.

Identify some abiotic characteristics of the tundra biome.