Birds 1 and 2 are the most recent to evolve on the island. Which statement describes how the principle of natural selection influenced the structural differences of the birds?
All the birds eat the same types of foods; birds 1 and 2 evolved larger, heavier beaks over time to eat more food.
B
Birds 3 and 4 mated with larger bird species living on the island, causing birds 1 and 2 to evolve with larger, heavier beaks.
C
D
Birds 3 and 4 became extinct, causing birds 1 and 2 to evolve with larger, heaver beaks.
All the birds have a common ancestor; birds 1 and 2 evolved larger, heavier beaks over time to eat different foods due to increased competition.
E
All the birds have a common ancestor; birds 1 and 2 evolved larger, heavier beaks over time to better compete for limited food resources on the island.