Lymph in the lymph vessels eventually reaches a lymph node -- there are about 100 nodes scattered throughout the body. Lymph nodes filter the lymph and also contain large numbers of white blood cells (a big part of the immune system), which remove foreign cells and debris from the lymph.When you get certain infections, the lymph nodes swell with billions of white blood cells working to clear the foreign cells causing the infection.ymph nodes filter the lymph and also contain large numbers of white blood cells (a big part of the immune system), which remove foreign cells and debris from the lymph. When you get certain infections, the lymph nodes swell with billions of white blood cells working to clear the foreign cells causing the infection.
Yellowstone: Annual Weather Averages. July is the hottest month in Yellowstone with an average temperature of 24Â°C (75Â°F) and the coldest is January at -2Â°C (28Â°F) .ellowstone: Annual Weather Averages. July is the hottest month in Yellowstone with an average temperature of 24Â°C (75Â°F) and the coldest is January at -2Â°C (28Â°F) .
Climate: Climate in the taiga is cold, with average annual temperatures from about +5Â° to -5Â° C (see figure at right). I always find it interesting to note that one location with a coniferous forest, Yellowstone National Park in Wyoming, has an average annual temperature of only 1Â° C! Precipitation varies, from about 20 cm of precipitation per year to over 200 cm. Much of the precipitation, of course, is in the form of snow. The winters are cold and long; summers are relatively short and cool. With snowmelt and low temperatures, there is little evaporation in the summer, so the ground is usually very moist during the growing season.