Silk was valuable because it was very hard to acquire and it was easy to transport because it was light weight
The most important Muslim practices are the Five Pillars of Islam.
The Five Pillars of Islam are the five obligations that every Muslim must satisfy in order to live a good and responsible life according to Islam.
The Five Pillars consist of:
Shahadah: sincerely reciting the Muslim profession of faith
Salat: performing ritual prayers in the proper way five times each day
Zakat: paying an alms (or charity) tax to benefit the poor and the needy
Sawm: fasting during the month of Ramadan
Hajj: pilgrimage to Mecca
Homeostasis denotes the regulation of an organisms internal environment to maintain conditions suitable for life and the ability of an organism to maintain internal consistency by adjusting it's psychological process. The following characteristic of life best describes the process of homeostasis: responding to the environment
. With homeostasis the organisms adjust their bodies and processes to the environment.
