Answer;
Probability
The chance that a certain event will occur is known as its probability.
Explanation;
Probability is the chance that a given event will occur; usually expressed between the number 0 and 1.
When the probability of an event occurring is 0 then that particular event will not occur.
On the other hand if the probability is 1 then it means the event will occur.
Seeds may be dispersed through animals themselves through feces or wind may carry them. repopulation is the main reason they are dispersed
Kinda weird. But I have no feelings over it :)