The Yew Tree is a traditional Scottish folk song, below is an example from YouTube.
This last verse is what I wrote:-
Oh a nuclear war and how many things more?
What horrors the future could hold us?
Global warming’s not nice, that could melt polar ice.
Oh my yew tree what have you not told us?
Population is always increasing,
But resources can never keep pace.
Will our future be worse?
Will we find it a curse?
Will end badly the whole human race?
My bonnie yew tree! Tell me what can you see?