Silas ends up draining Jeremy's body and breaks his neck, killing him. After much denial, Elena realizes that Jeremy is truly dead.
Jeremy Gilbert is a former main character and a male protagonist on The Vampire Diaries. Following his resurrection in the Season Four finale, he moved into the Salvatore Boarding House with his sister and her boyfriend, Damon Salvatore since their house was burned down by Elena after Jeremy's death.
Jeremy was shot by Sheriff Forbes after Damon dodged the bullet and was revived by Bonnie, who is a witch and has connections to dead witches with the power to bring him back.
He simply didn't have the energy left to transform. A Shifter can indeed transform whilst being heavily injured, like Reiner and Bert did: But that's only if a transformation had not recently occurred before. Season 2 Eren was still getting accustomed to his Titan Powers.
His Sacred Treasure was the Divine Axe, Rhitta, and his inherent power was called Sunshine, which made him renowned for gaining immense power during the day, and gradually becoming weaker with the setting of the sun, leaving him frail and submissive at night.
Evolutionary classification is classification based on common ancestors whereas traditional classification is classification based on similarities and differences. The classification of American vultures has changed because of DNA analysis.