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.
Alike: Both Tigers and Lions are in the feline family (also known as the cat family or big cats family.) They are also both mammals. They are in the group of Panthera(Roaring big cats). They can crossbreed for resulting the born of a Tigon or a Liger. Differences: A tiger has stripes and a lion is a more solid color.