The fruit of a particular tree species formed the predominant diet of the dodo. After the dodo became extinct, that tree species also became extinct. Which of the following is the most likely cause for the tree's extinction?
1
the dodo habitat was destroyed
2
the seeds of that tree required passage through the digestive system of the dodo for germination
3
by living close to the tree, the dodo protected the tree from other birds
4
other birds ate the fruit of that tree, as well as fruit of other trees, and dispersed more seeds than the dodo did
5
Question Not Attempted