What Tum'as Adam is the Pasuk referring to?
Rashi: It is referring to Tum'as Meis.
Which Tum'ah are "le'Chol Tum'aso", "asher Yitma" and "Bah" coming to add?
Rashi: It is coming to include where he touched a Zav or a Zavah, 1 where he had relations with a Nidah and where he swallowed a piece of Neveilah of a Tahor bird, respectively.
A Nidah or a Ba'al Keri.
What is "v'Hu Yada" coming to teach us?
Rashi (Shabbos, 2b) and Rashbam: It teaches us that after forgetting the Tum'ah (or Kodesh or Mikdash), he remembers it. 1
Why does repeat the phrase ve'Ne'elam mimenu"?