This causes pieces of the continental crust to crack and pull apart. Some slabs of the crust sink, causing a rift zone. If the lithosphere continues to spread, a narrow sea can form. Continued spreading produces an ocean basin and ridge system.
Confidence votes 3. a tiger is a mammal because they give milk to their young and produce milk. They breath the air form of oxygen and produce milk. They fulfil the criterion that need to be fulfilled by a mammal. Thse being that they are warm blooded, animals that give birth to live young and sucle them.
The Tasmanian tiger-wolf was a marsupial; it had a pouch for its young just like a kangaroo. Marsupials are found almost exclusively in Australia and certain surrounding islands such as Tasmania. They died out in most of the rest of the world. On thing the Tasmanian tiger-wolf does share with its tiger and wolf namesakes is vigorous persecution by human beings. The Tasmanian tiger-wolf is now extinct. Despite its similar name, the Tasmanian tiger-wolf is not the same creature as the cartoon-famous Tasmanian devil.