Monkeys can certainly survive in North America. The Mystery Monkey of Tampa is proof enough of that. But for them to survive here, they have to get here--the monkeys that were here, the Platyrrhines, aren't the ones to survive in a place like Tampa.
Most people enroll in Part A. when they are first eligible for Medicare because there is no premium for Part A if you have. worked and contributed to Social Security for at least 10 years. However, when you should. enroll in Part B depends in large part on how many employees work for your employer.
This delay is permitted only for people working for companies or organizations that employ 20 or more workers. If you work for a smaller employer, you must enroll in Part A and Part B when you turn 65, and then Medicare pays claims first and your employer plan becomes your secondary insurance. Medicare has strict enrollment rules that affect people differently according to their circumstances.