complimentary --------- A letter of recommendation.
AutoBiography
Satire
Libel. Spoken is slander.
It is called quoting (or to quote) the person and you should do also giving acknowledgement to the person and in which work he wrote it.
Optimal environmental conditions
That is called a favourable condition or appropriate amount?
A speech or piece of writing praising something is called a eulogy or tribute. It is a formal expression of admiration, reverence, or appreciation for someone or something.
Facsimile also known as a fax
An obituary is what is published in a newspaper after a famous person's death.
It is called an obituary, sometimes abbreviated to obit.
Someone who is racist, whether it be towards their own race or any other is a racist or has a prejudice towards their own race. In Psychology, this kind of racism is called Internalized Racism.
Writing to inform your audience is called 'contextual' writing.