<span>There are numerous symptoms that could be associated with hyperthyroidism. Thus, a comprehensive evaluation of the patient's health history is vital. Symptoms of hyperthyroidism include, but are not limited to, unexpected weight loss, rapid or irregular heartbeat, sweating, and irritability.</span>
Natural ecosystem : ex a tropical rainforest ( basically anything made my nature ) ; artificial ecosystem : ex an aquarium, a zoo ( every type of ecosystem but man made )