It depends on what you mean by that. There are different kinds of diseases. I'm no doctor, but diseases can do different things to you. Examples: Flesh eating disease, breast cancer, tumors. Diseases are triggered by something. It could be from genes, unhealthy eating habits, contact with certain chemicals, etc. In conclusion, diseases just affect people in different ways. Sorry to be so vague, but I'm, again, no doctor.
how is pest and disease a problem to farmers
Rats are still a problem to day because they carry deadly diseases andcould bite you and infect you with the diseases!
Dyslexia.
Because they had no immunity to the diseases, since those diseases had never existed among them prior to European colonization.
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the spread of diseases from animals to humans.
It can improve medicines. It can treat inherited diseases. It can protect the environment. It can prevent food-borne diseases.
Poor sanitation conditions was the primary cause of most of the diseases during the American Civil War.
diseases were spread from livestock to humans.
HIV/AIDS is a major problem in Africa, with some countries having an infection rate over ten percent. Other epidemic diseases include Ebola and malaria.
Gregory Pate has written: 'Problem based learning' -- subject(s): Bone Diseases, Metabolic, Case Reports, Diagnosis, Metabolic Bone Diseases, Physical Examination, Problem solving, Problems and Exercises
Genetic genes is a problem... well, I have just answered your question!