The captured Africans were held in forts, sometimes called 'slave castles', along the coast. They remained there for months until finally leaving their homeland for an unknown destination on board European merchant ships, including those of the British Royal African Company.
Key Points. 1  The majority of fluid output occurs from urination. Some fluid is lost through perspiration (part of the body's temperature control mechanism) and as water vapor in expired air. 2  The body's homeostatic control mechanisms ensure that a balance between fluid gain and fluid loss is maintained.
It is the main source of Nitrogen in urine and is excreted by the body as a waste product from your â¦ kidneys. Urea is a readily available source of Nitrogen so is used as a fertilizer and sometimes as a supplement to feed for stock.+ 59 others found this useful.Sione Stanley.t is the main source of Nitrogen in urine and is excreted by the body as a waste product from your â¦ kidneys. Urea is a readily available source of Nitrogen so is used as a fertilizer and sometimes as a supplement to feed for stock. + 59 others found this useful. Sione Stanley.