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A vertebrate is an animal or species distinguished by its possession of a backbone or spinal column. Vertebrates can be insects, fish, mammals, birds, reptiles, and also amphibians.
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Answer:
measuring seismic wave activity
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the earths interior is made up of a number of layers such qs the crust, mantle, outer and inner cores.
Answer: Looks at oceans as highways instead of barriers
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folk culture is more likely to vary from place to place at a given time, whereas popular culture is more likely to vary from time to time at a given place. ... Folk customs often have anonymous hearths, originating from anonymous sources, at unknown dates, through unidentified originators.
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