Component Fallacy
A false extrapolation is a special kind of over-generalization involving a prediction. It is the process of predicting a result based on insufficient evidence. False extrapolations are hard to disprove because it is hard to disprove something that hasn't yet happened.
Example: If we don't stop cutting down so many trees, we won't have any oxygen by 2030.
(This isn't necessarily true, and the audience (reader, listener, etc.) may lose confidence in you if they aren't as committed to your stance. Avoid making rash, unprovable claims when making a point and you'll maintain your appearance or rationality.)