In the wrong song example ... A male cactus finch can learn the medium ground finch song. In a case where, a male finch does learn the wrong song. When the father dies and they learn the song of a male neighbor of a different species.

If a male finch learns the wrong song, it might mate with the wrong species, provided that their size and overall appearance are not all that different. The offspring of a cactus finch and medium ground finch would look like an intermediate between the two, but the song would not be an intermediate, it would be the same song the male parent sings!

These hybrid offspring are rare, and they are not as fit as either parent.
Can you think of why that is?

increase soil erosion                                             reduce soil erosion

cattle grazing                                                         hydroseeding

deforestation                                                         contour plowing

                                                                                planting vegetation

plant roots basically hold the top soil

together and stop soil erosion because

in such situation top soil is not removed

during flood but cattle grazing causes

soil erosion because cattle consume the

grasses and herbs and top soil is exposed.

same situation occurs because of

deforestation, the trees and plants are cut

down to expose top soil which causes soil

erosion

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organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.