Two parrots have different parents. One parrot has red chest feathers, and the other parrot has yellow chest feathers. Why do the parrots have different feather colors on their chest?
Subject:(Science)

Viktor is a russian university student. he wants to go to new york for a semester to study and improve his english. what should he do before he buys his plane ticket? a. buy a map of new york city b. pay for his program in new york c. apply for a us visa d. apply for a policy waiver