Answer:
Alchemy is it is a blend of religion, mythology, astrology, philosophy, magic, spirituality, folklore and others whereas chemistry is used to describe the practical art of manipulating matter.
The roles and duties of each operation consists of human and health services which caters to the civilians in their well-being and care. The operator receives and sends information from the ones who are in distress and reports to the EMT's to go and provide help for them. The Paramedic revives or sustain any blood-loss/ pain/ or disdain to keep the patient alive until they reach the hospital.
Answer: it means the silence was loud.
Explanation: the word deafening means; very loud, or unable to hear. so when the teacher screamed and the entire cafeteria went quiet, the silence was loud. thats all it means.