NGSS · Life Science · Grades 6–8 (Middle School)

MS-LS4-4 Natural Selection & Variation

Construct an explanation based on evidence that describes how genetic variations of traits in a population increase some individuals’ probability of surviving and reproducing in a specific environment.

Teach MS-LS4-4 with a mystery

Hurricane Survivors cover
Science Unlocked lesson set Hurricane Survivors Two monster hurricanes hit two tiny islands in 2017. When scientists came back, the lizards still alive had bigger toe pads, longer front legs, and shorter back legs than the lizards measured just before. 1 week · $3.00 · Grades 6–8 See what’s inside
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More Life Science standards

MS-LS1-1Cells: Living Things Are Made of CellsPhenomenon: Built From CellsMS-LS1-2Cells: Cell Parts & Organelles ModelPhenomenon: Cell Parts at WorkMS-LS1-3Body Systems & SubsystemsPhenomenon: Systems in SpaceMS-LS1-4Animal Behaviors & Plant Structures for ReproductionPhenomenon: Raising the OddsMS-LS1-5Genetic & Environmental Factors in GrowthPhenomenon: Growing GiantsMS-LS1-6Photosynthesis: Matter & EnergyPhenomenon: Garden in a Bottle