。
She clearly knows a lot about biotechnology.
Literal
Clearly she [topic-は] biotechnology [about-について] well knows.
明らかに ('clearly, obviously') is an adverb derived from 明らか (a な-adjective 'clear/obvious') + に. 知っている is the standard 'know' form — 知る means 'to come to know,' so '知っている' is the resulting state 'is in a state of knowing.' Plain 知る alone would mean 'gets to know,' not 'knows.'