One way the body fights invaders is by increasing the body temperature, or running a fever. give a brief explanation as to why that defensive technique works against some viruses or bacteria. this is a writing assignment!

In this exercise we have to explain how our body tries to fight bacteria and viruses just by increasing the temperature.

Fever is not a disease in itself, it is usually the manifestation of some illness. Fever is characterized as an increase in temperature above normal levels.

So as explained, the answer will be our body's response so that bacteria can't multiply and thus destroy us from the inside. Leaving the environment with high temperatures and not conducive to its development.

See more about bacteria at  link

Some bacteria are not able to function properly and replicate at the fever-high temperatures hence this reduces their infection rates in the body. More research has also shown that the temporal increase in body temperature, during the fever, increases the  activity of the cytotoxic T-cells that are significant in fighting infection.