Below is a simple AMF file describing a pyramid made of two materials, adapted from the AMF tutorial (548 bytes compressed). To create this AMF file, copy and paste the text below text into a text editor or an xml editor, and save the file as pyramid.amf. Then compress the file with ZIP, and rename the file extension from .zip to .zip.amf.
The flu is a respiratory illness caused by influenza viruses that infect the nose, throat and lungs â but its effects can be felt through the whole body. The flu is a highly contagious viral infection of the respiratory tract. The symptoms of flu and colds are similar, but flu symptoms come on suddenly, Flu Symptoms.
How Long Do Colds Last? Cold symptoms usually start 2 or 3 days after a person has been exposed to a source of infection. People with colds are most contagious for the first 3 or 4 days after the symptoms begin and can be contagious for up to 3 weeks. Although some colds can linger for as long as 2 weeks, most clear up within a week.