The reason why one case of influenza does not confer lifelong immunity is that the virus tends to mutate overtime which makes it unrecognizable to the immune system.
<h3>Why is it difficult to get immunity to influenza?</h3>
Influenza is caused by a virus which tends to mutate overtime in order to stay ahead of medical technology.
As a result, this mutation makes the original virus unrecognizable to the immune system which would then be unable to fight it.
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Answer: Atmosphere is a mixture of gases. It includes water in the gaseous form that is in the form of water vapors.
Explanation:
The following are the factors that affect the amount of water available in the atmosphere:
1. Rate of evaporation of water from the terrestrial and aquatic regions. Faster the rate of evaporation more will be the concentration of water vapor in the atmosphere this is influenced by heat and radiation provided by the sun.
2. Rain and other precipitation: The moisture in the air condense in the higher atmospheric layers and rain and other forms of precipitation fall down the water will become the part of hydrosphere rather than atmosphere.
3. Rate of transpiration: The transpiration is a process that occurs in plant in which the plants lose their water content through small pores on the leaves and stems into the atmosphere. Faster the rate of respiration more water content or moisture will be present in the atmosphere.
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A surface report?
not really sure
