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.
Be age 65 or older and eligible for Social Security: You may be automatically enrolled into Medicare Part A (hospital insurance) when you reach age 65 and become eligible for Social Security; but if you want Medicare Part B (medical insurance), you have to enroll in it.