Each tonsil consists of a network of crypts (pits) that store cells used to fight infection. The tonsils contain B cells, a type of white blood cell that fights infections. They also produce antibodies against polio, streptococcal pneumonia, influenza, and numerous other infections.
Global Warming: What's Up With The Weather? is a DVD presentation of the television special by NOVA and Frontline dealing with questions raised about modern climate change.
Weather is what the atmosphere does in the short term, hour to hour, day to dayâ¦ Weather is chaotic, which means that even a microscopic disturbance can lead to large scale changesâ¦. Climate is the long-term average of the weather over a number of years.