producer renewable solution mixture
cycle contract potential energy consumer
rotation traits carnivore mixture
community migrate reptiles sound
extinct metamorphosis amphibians
magnetic food chain renewable resource
population experiment germinate
endangered environment investigation
mammals weathering condensation
conservation solution vibrations
equator revolution invertebrate
physical change decomposer structures
evaporation rock ecosystem expand
kinetic energy herbivore erosion
dispersal vertebrate adaptation water
axis environment investigate system
magnetism nonrenewable resource balance
pollination solar system experiment