Causes of famine. Famine can be caused by many different reasons, some, like floods, droughts, and earthquakes are natural, and others, like lack of food and shortage in food distribution to specific parts of a region, humans are responsible for.
Transportation: The cardiovascular system transports blood to almost all of the bodyâs tissues. The blood delivers essential nutrients and oxygen and removes wastes and carbon dioxide to be processed or removed from the body. Hormones are transported throughout the body via the bloodâs liquid plasma.
Among other things, blood transports oxygen to various parts of the body. Blood consists of several types of cells floating around in a fluid called plasma. The red blood cells contain hemoglobin, a protein that binds oxygen. Red blood cells transport oxygen to, and remove carbon dioxide from, the body tissues.