Both the La Plata river dolphin () and the sperm whale () belong to the suborder
Chapter 1, Problem 38(choose chapter or problem)
Both the La Plata river dolphin () and the sperm whale () belong to the suborder Odontoceti (individuals that have teeth).ALa Plata river dolphin weighs between 30 and 50 kg, whereas a sperm whale weighs between 35,000 and 40,000 kg. A sperm whale is order(s) of magnitude heavier than a La Plata river dolphin.
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