Middle School Life Science Quiz
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ECOSYSTEMS: INTERACTIONS, ENERGY, AND DYNAMICS
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A lake model shows two fish species (Species A and Species B) that eat similar insect larvae (competition). In Lake 1 both species are present; in Lake 2 Species B is absent. After one breeding season: Lake 1—Species A average offspring per adult: 12; adult survival: 60%. Lake 2—Species A average offspring per adult: 20; adult survival: 75%. Interactions can affect survival and reproduction. Which explanation best links the interaction to the outcomes using evidence?
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