Part 2, Chapter 10 Summary

Darwin wondered if species kept isolated from other like species would change and adapt to new surroundings and create a new species. Darwin realized that competition between species can lead to changes and adaptations within each species to lessen the competition. Natural selection decides which species stay and which species go depending on many underlying factors. But the species that is more adaptable will always win out.

The Grants have watched this phenomenon to an extent with their finches, but since different birds visit the island, the Grants are waiting to see what happens next.

Lack believes competing species adapt to the environment differently, alleviating the competition. Robert Bowman studied the Galapagos, before the Grants, but after Lack. He studied what the birds ate by shooting them and looking at the contests of their stomachs. Each island has different plants, which...