What is the concern of the field of biostatistics?

Biostatistics is concern with statistical data relating to living organisms that answer research questions in medicine, biology and public health. 

Moreover, it is a tool that gives us answers on things that are uncertain such as how a new drug works, what causes cancer and other diseases, and how long a person with a certain illness is likely to survive.

my hamster died and my second hamster i got after that one died as well. i also lost two birds named rainbow and kiwi, (they didn't die, they flew off and escaped). i lost a cat named omi, and a dog named snoopie. the best way i got over it is, paying my respects, and just thinking that they were in a happy place. as well as just remembering but not thinking about it all the time, just do fun activities and try not to think about it too much. hope you feel better. i'm sorry about your loss. : (