The most important aspect that is considered while stating the difference between a ship and a boat is the size. It is said that the best way to differentiate between a ship and a boat is to remember that âA ship can carry a boat, but a boat cannot carry a ship.â. Credit: Jyoti Luthra.
Site and Date of Introduction: The brown tree snake was introduced into Guam in the 1950s. The snake was first sighted inland from the seaport and became conspicuous throughout central Guam by the 1960s.By 1968, brown tree snakes had successfully dispersed throughout the island.eason(s) Why it has Become Established: The brown tree snake has become established on Guam due to the absence of natural population controls and the abundance of vulnerable prey on the island. For example, introduced lizards are popular food items for young snakes.
The brown tree snake (BTS) is the quintessential invasive species. Since finding its way to the U.S. territory of Guam in the mid-20th Century, it has wiped out most of the islandâs native bird species and continues to devour lizards and small mammals at an alarming rate.nd with no native snake species to compete with, the brown tree snake had the buffet table all to itself. Population control of the BTS in its native range results from a more limited and elusive food supply.