What is the function of macrophages, t-cells, cytotoxic t-cells, suppressor t-cells, plasma cells, and memory cells?

Macrophages engulf foreign material and destroy them using lysozymes. When presented with antigen by antigen presenting cells, Helper –T cells produce cytokines that activate B cells and triggers the adaptive immune response. T-helper cells determine the specificity of the adaptive response to an antigen. Cytotoxic-T-cells destroys infected cells that have displayed an antigen on the MHC I surface receptors. Suppressor  T cells enable negative feedback by downregulating immunity in cases when a foreign antigen is eliminated. It also prevents autoimmunity.  Plasma cells are repsosncible for the production of antibodies in the humoral immune response. Memory B and T cells ensure the immunity can remember an infectious agent and therefore can launch a faster response in case of re-infection.

significant amounts of nitrogen oxides, carbon monoxide, and other pollution

explanation:

passenger vehicles are a major pollution contributor, producing significant amounts of nitrogen oxides, carbon monoxide, and other pollution. in 2013, transportation contributed more than half of the carbon monoxide and nitrogen oxides, and almost a quarter of the hydrocarbons emitted into our air.

the cell theory states that all living things including animals, as well as plants, are made of cells.