PH is the correct answer.... Hope I helped! :D brainliest? :D
Answer:
carry messages to and from the brain and spinal cord and the rest of the body
OR
it is a bundle of fibers that receives and sends message between the body and the brain
A is not true. its not part of the basic structer of a cell.
Well there alot of challenges faced by biologist researchers during the research of infectious disease, however major of those include the followings:
1- Defining and measuring the fitness for pathogens across the scales
2- Developing models to capture the impact of co-infection on the evolutionary process
3- Modeling how pathogen characteristics shape the evolution of hose immune diversity
4- Understanding the maintenance of pathogen diversity
5- Developing the better models for the impact of genetic systems on pathogen evolution .
It gives context to some of the data
