1. Because the drought reduced the number of seeds and finches with bigger beaks were able to eat the larger and harder seeds so more of them survived.
2. Summary: Changes in the size and form of the beak have enabled different species to utilize different food resources such as insects, seeds, nectar from cactus flowers as well as blood from iguanas, all driven by Darwinian selection
3. Medium ground finches with larger beaks could take advantage of alternate food
4. three species of Darwin's tree finches have been known to inhabit Floreana but no birds singing that song on Floreana have been heard in many years.
I believe its a because the sun is located in a spiral arm of the galaxy so we would be farther away from the center than we would be if we were not in an arm hope it helps
Heritability deals mostly with genes in natural and artificial selection, which means it can be passed down from generation to generation through our genes.
