What is the main function of the immune system?

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to protect the host from environmental agents such as microbes or chemicals, thereby preserving the integrity of the body.

The main function of the immune system is to protect the host from environmental agents such as microbes or chemicals, thereby preserving the integrity of the body.

Hope this helps! Brainliest Please! ;p

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.

not: both offer magnification to the atomic level.