Generally, yes. A person who is considered a public figure or otherwise notable can usually be used in a work of fiction, so long as it is not in a defamatory manner. Most authors tend to limit references to actual persons to real events, and not involve these characters directly in fictional parts of the plot.
Basically, common sense prevails. If you write a book featuring Regis Philbin as a serial child-rapist, you will likely wind up in court. If you write a murder mystery with Bin Laden, Saddam Hussein, or Boris Yeltsin as your prime suspect, there's little likelihood of a lawsuit.
Karina Lombard and Vaitiare Bandera are famous people that were born in Tahiti. Both are still living today.
Millions of biologists are currently living, both famous and not so famous. They work in private sectors and in government positions, worldwide.
1984 and Animal Farm are both very famous books, and for good reason.
There are actually two famous people named Spock, there is Mr. Spock from Star Trek, and Dr. Spock, who wrote a well known book about the care of babies. Both of them are more famous than Wayne Rooney.
they both tell his life story and how he became famous
Many famous people have open relationships. Tilda Swinton and Pink both have had open relationships.
Adele is more Famous than Mr.Bean But they are both good people :)
It is both.
Both series are very popular and have large fanbases but it's impossible to determine how famous a series is. Book sales and box office records don't take into account people who are aware of the series but haven't read or seen it.
Both are countries, and there are people living in them. That's about it.
There are no internationally famous Tuvaluans to my knowledge. The most prominent statesmen are Sir Toaripi Lauti and Sir Tomasi Puapua, both of whom served as Prime Minister and later Governor-General.
they are both able to move and they both respond to their surroundings for example when a light turns red the cars stop.