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.
Medicare.gov recommends that you sign up for Medicare Part A when you turn 65 even if you have health insurance through an employer or union. Under certain circumstances, if you sign up for Medicare Part A, Medicare may cover some hospitalization expenses not covered under your existing health insurance.