What did darwin observe about finches in the galápagos islands

He observed a difference in beaks in the finches population.

Explanation:

On the Galapagos island, Darwin observed a graded series of different beak sizes and shapes in the finches that were present on the island. He predicted that these species might have been originated from one mainland species and later got modified. For the difference in the beak shapes and sizes of the finches, Darwin proposed the reason to be the Natural Selection which was caused due to the inheritance of traits, competition between individuals, and the variation of traits.

Their beaks were adaptations related to the foods the finches ate.Explanation:

surface mining destroys mountain tops, landscapes, forests and wildlife habitats. on top of that, it leads to soil erosion and destruction of agricultural land. the landscape changes can also disrupt river channels and streams, which leads to flooding. which, can destroy plant life and other animals as well.

explanation:

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.