Answer:
Darwin's work in particular focused on animals of the Galapagos islands, especially finches. Over time, the idea that species changed from natural selection pressures through “descent with modification” gave rise to the idea of evolution.
Darwin was also interested in Phytophthora, the widely dispersed plant pathogen, and the attempts to grow Phytophthora-resistant plants, and was fascinated by the many algae he encountered on his voyage1.
Step-by-step explanation:
and this helps him to develop the theory of natural selection