After greeting and respect for all
I am from Iraq and I am a student in the third Department of Biology I need to resolve some questions concerning Bacteria and given to us as a duty , I hope that I get help

First question: provide examples of the generation time of bacteria, and how it takes

Second question: provide some examples of bacteria-loving high-pressure

third question: why is the lack of Leicocytes when disease typhoid fever .and any kind of bacteria causing this disease ?

I hope to find a helping hand to resolve these questions

And I apologize if my language is not perfect well