magnetism nonrenewable resource balance
producer renewable solution mixture
cycle contract potential energy consumer
community migrate reptiles sound
dispersal vertebrate adaptation water
rotation traits carnivore mixture
equator revolution invertebrate
population experiment germinate
endangered environment investigation
physical change decomposer structures
axis environment investigate system
extinct metamorphosis amphibians
kinetic energy herbivore erosion
evaporation rock ecosystem expand
magnetic food chain renewable resource
mammals weathering condensation
conservation solution vibrations
pollination solar system experiment
速度 (字/分): 0 | 正確率 : 100%|時間: 05:00
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