erosion evidence force fossil friction
stationary object survival universe
pulley reflection refraction reproduce
fulcrum galaxy hypothesis igneous rock
decomposer density deposition direction
physical change position producer protest
earthquake electrical circuit electricity
inclined plane inherited traits insulator
adaptation atomosphere balance scale
microscopic mineral motion organism
method sediment sedimentary rock speed
conservation constellation consumer
resistance revolution rotation scientific
variable volcano wheel and axle
chemical change classification conductor
lever magnetic metamorphic rock
速度 (字/分): 0 | 正確率 : 100%|時間: 03:00
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