Why do you think the additional verses were added? How do they change the meaning of Mark’s Gospel?

“Mark’s Gospel originally ended with verse 8 of chapter 16. The other verses were latter additions. Question: Why do you think the additional verses were added? How do they change the meaning of Mark’s Gospel? How does verse 17 for example, fit with the ethos of earlier chapters? Develop your answer in a crafted reply of around 400 words, and post to your group discussion page for this lesson. 
https://quod.lib.umich.edu/cgi/r/rsv/rsv-idx?type=DIV1&byte=4697892
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