[Answer] 1. Which ocean is described as the commercial highway between important industrial regions of western Europe and the northeastern states of USA?

Step 1 : Introduction to the question "1. Which ocean is described as the commercial highway between important industrial regions of western Europe and the northeastern states of USA?"

...1. Pacific Ocean 2. Bay of Bengal 3. Indian Ocean 4. Atlantic Ocean The Atlantic Ocean serves as the commercial highway between important industrial regions of western Europe and northeastern states of the USA. It has some of the best seaports in the world; Montreal, London and New York. It has the longest coastline among all oceans. It also contains famous islands like Puerto Rico, Cuba and Jamaica.

[Answer] 3. The wildlife of Iran used to include an animal which is now extinct. Which of these used to roam the northern regions of Iran?

Step 1 : Introduction to the question "3. The wildlife of Iran used to include an animal which is now extinct. Which of these used to roam the northern regions of Iran?"

...1. Lesser bilby 2. Caribbean monk seal 3. Caspian tiger 4. Irish elk The Caspian tiger, also known as the Persian tiger, Turanian tiger, or Hyrcanian tiger, was found in Iran, Caucasus (Armenia), Iraq, Afghanistan, Turkey, Mongolia, Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, and Uzbekistan until it apparently became extinct in the late 1950s. The lesser bilby was an Australian animal, last sighted in 1931. The Caribbean monk seal was last sighted near Nicaragua in 1952, while the Irish elk was last seen in Great Britain around 6,000 BCE.