predation seed distribution competition seed fossilization
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Squirrels in cold climates gather and store food for winter. The squirrels sometimes bury nuts and then do not return for them. These nuts can grow to become trees. This chain of events is an example of
Possibilities:
- predation
- seed distribution
- competition
- seed fossilization

seed distribution