Discuss the limitations of using antigen concentration to deduce the path of infection. why isn't antigen concentration always accurate? be sure to refer to the workings of the human immune system.

The antigen concentration is not used to deduce the infection pathway because the immune system of the body might fight off the antigen. The lymphocytes, which are a part of the immune system helps in the production of the antibodies, and destroying the antigens. Therefore, the use of the antigen concentration here may result in skewed results as the antigens might get destroyed by the immune response of the body. Moreover, the response of different individuals to different concentrations of the antigens will be different.

where is the

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."