Mutations are simply a change in genes. So mutations usually result in variation of an organism that can be good or bad. Some mutations can result in physical and mental disorders like Stockholm disease or down syndrome, Where else some mutations can cause immune to diseases that are harmful.
        
             
        
        
        
It is related to thyroid dysfunction because one main cause of exophthalmos is the thyroid eye disease. It is a condition were the tissues inside the eyeballs would swell due to too much thyroid activity. Exophthalmos is known as proptosis and is a term used for bulging eyeballs. This condition is an autoimmune type and one in every three people would have this condition. It is common for women in their 30s to 50s and for people who smoke. Other causes of this condition are bleeding at the back of the eyes, abnormal shape of the blood vessels and infection of the tissues in the eyes.<span />
        
             
        
        
        
Parathyriod gland... their location is in your neck... actually there are 4 little parathyroid glands that are in the squre of thyriod gland
        
             
        
        
        
Answer:
They release C02, which contributes to climate change.
They can cause health issues.
Explanation:
The other two are positive aspects, and these two are true.