The first evidence supporting the theory of continental drift was evidence of extinct species on nearby continents the fitting together of neighboring continents like jigsaw puzzle pieces the fossil evidence of a former tropical climate non-tropical continents the existence of coal deposits in similar areas of neighboring continents

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

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.