Answer: Postraumatic stress disorder
Explanation: The Postraumatic stress disorder or PTSD is a psychological disorder that occurs when someone goes through a traumatic experience, that experience increases levels of stress resulting in a constant state of awareness, nightmares, avoidance of things/situations that could possibly trigger memories related to the traumatic experience, invasive and unwanted thoughts that produces anguish.
Arab–Byzantine wars were a series of wars between the mostly Arab Muslims and the East Roman or Byzantine Empire between the 7th and 11th centuries AD, started during the initial Muslim conquests under the expansionist Rashidun and Umayyad caliphs in the 7th century and continued by their successors until the mid-11th century.
Biology is a branch of science that studies about life and living organisms. It includes physical and chemical structure, development, and evolution of all living things. It seeks to answer questions about all living things.A biologist may ask about how plants maintain life processes. In Christian biology, biblical knowledge and faith are integrated in learning the evolution of the earth and the living things that consist it. Likewise, it states that God's signature is written in his creation or the living world is a testament of God's actions.
