Recent research has found that on one island of the galapagos two finch species interbred. this interbreeding may have resulted in a hybrid species that ultimately led to the extinction of one of the species darwin discovered. they call this speciation in reverse, or despeciation. based on what you know about speciation, why are these terms appropriate?

Speciation. Because Speciation is when organisms change overtime.

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.