science story board(natural selection)

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science story board(natural selection)
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  • overproduction
  • variation
  • environment
  • *drinks water*
  • In the elephant population, half the population survive and reproduce and the other half of the population dies.
  • struggle
  • *cant drink water*
  • The elephant species have two types of variations. long trunks and short trunks. One variation chosen for and one is chosen against.
  • selection
  • The elephant use their trunks to drink water. With a short trunk they cant reach the water so they cant survive and reproduce.
  • differential reproduction
  • there is a constant struggle with elephants not being able to reach water to drink.
  • one variation is chosen for and once is chosen against. The elephants with longer trunks are able to drink water and survive and reproduce unlike the elephants with shorter trunks that cant reach water.
  • Over time evolution and natural selection work together so elephant populations can have more successful elephants.
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