Thymosin is The hormone that stimulates the development of the immune system and the production of lymphocytes
The components of the second line of defense against microbes may be characterized as responders to invasion. It is a non specific resistance that destroys invaders in a generalized way without targeting specific individual cells; For example, phagocytic cells ingest and destroy all microbes that pass into body tissues. The first line of defense on the other hand,includes intact skin, mucous membranes, sebum, tear, among others.
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Biofuels are renewable fuels that are produced from biomass, organisms that were formed and stopped living a short time ago. The energy in the biofuels is called bioenergy. The major constituents of biomass are cellulose, lignin, starch and sugar, but many plants also contain other organic compounds that are beneficial for energy recovery from the material due to their physical structure and chemical composition. The difference between biofuels and fossil fuels is that fossil fuels take millions of years for new formation while new biomass for biofuels is constantly being formed. This means that biofuels can usually be considered carbon neutral as the carbon dioxide emitted during combustion is constantly bound to new biomass in a closed cycle.
Continental Tropical A) Hot and very dry. Can bring record heat in the summer.
Arctic-Frigid Dry Air B) Can reach -30 to -60 degrees.
Maritime Polar C) Forms over the North Atlantic and North Pacific. Brings cloudy damp weather.
Maritime Tropical D) Cold temperatures and very little precipitation.
Continental Polar E) Warm temperatures and copious moisture. Forms in the Atlantic Ocean and Gulf of Mexico
