Problem: Text: Two-stroke oil (also referred to as two-cycle oil, 2-cycle oil, 2T oil, 2-stroke oil or petroil) is a special type of motor oil intended for use in crankcase compression two-stroke engines.

Question: is there a difference between 2stroke and 2-cycle oil?
A: no

Problem: Text: Mixed twins are fraternal twins born to multiracial families which differ in skin color and other traits considered to be racial features.

Question: is it possible to have twins with different skin colors?
A: yes

Problem: Text: Marsupials represent the clade originating from the last common ancestor of extant metatherians. Like other mammals in the Metatheria, they give birth to relatively undeveloped young that often reside in a pouch located on their mothers' abdomen for a certain amount of time. Close to 70% of the 334 extant species occur on the Australian continent (the mainland, Tasmania, New Guinea and nearby islands). The remaining 100 are found in the Americas -- primarily in South America, but thirteen in Central America, and one in North America, north of Mexico.

Question: except for opossums it is hard to find marsupials in the western hemisphere?
A:
yes