A flight simulator that helps astronauts prepare for a shuttle launch is an example of a Scientific Model.
Answer: Hydrogen that is not used in balloons because hydrogen burns very easily.
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When an organism is buried quickly there is less decay and better the chance for it to be persevere. The hard parts of the organism such as bones, shells, and teeth have a better chance of becoming fossils that softer parts of the organism. HARD BONES.
The sun solar energy produce all the energy
