rampage
There are many with 2 adjacent letters: Abba, dear, deaf, clef, etc... Is there a four letter word with 3 letters that are adjacent letters in the alphabet? "Nope!" (Spanish yields "hijo.") Four adjacent letters won't work.
By earthquakes,sinkholes and volcano eruptions.
Telomeres are the special DNA sequences located at the ends of chromosomes that protect them from deterioration and contribute to aging and cell death when they become too short. Telomeres gradually shorten with each cell division, eventually reaching a critical length that triggers cellular senescence or death.
If by die you mean their bodies cease to function, yes, they die. If you mean do they go on to life a life after death, depends on your religion, or lack thereof.
Guardianship of a minor typically ends when the minor reaches the age of majority, which is usually 18. At that point, the individual is considered an adult and no longer requires a legal guardian.
fuss
Another word for a brass-like alloy that is 6 letters and ends in "en" is "latten."
Headache starts and ends with the letters he. Another word is heartache.
Wit
heap
Aga
luxuriant
Eagles
township
minute, little, petite
Latten
The word, "trauma" seems to fit.