brown tree snakes are nocturnal. most of Guam's native forest birds are not. explain how this has affected both the snakes and the birds. The snakes easily find and kill the sleeping birds, and the snakes success has allowed them to reproduce quickly.
A person may have both internal and external hemorrhoids. Symptoms of hemorrhoids include occasional throbbing pain, itching, burning sensation, bright red blood on toilet paper or stool, or a lump of soft tissue protruding outside of the anus.
External hemorrhoids may develop painful blood clots. If this happens, theyâre called thrombosed hemorrhoids. Internal hemorrhoids may prolapse, which means they drop through the rectum and bulge from the anus. External or prolapsed hemorrhoids can become irritated or infected and may require surgery.