Répoussé is a metalworking technique by which a metal like copper is hammered repeatedly to create ornaments and art work. The metal hardens in the process and loses its malleability and ductility Which of the following terms represents this process of deliberate hardening of metals?
a. covalent networking
b. working gardening
c. lustering
d. alloying

- "the acute form of diverticulitis can manifest itself with one or more severe attacks of infection and inflammation.

the inflammation of diverticulitis can eventually result in a bowel obstruction, which may cause constipation, thin stools, diarrhea, abdominal swelling or bloating, and abdominal pain."

increased stability in the completion of fluorine's outer shell.

its first and third is your answer i did the qustion the fourth isnt right