Answer:
A) & B)
Explanation:
A) There are certain viruses that are present in both healthy and disease people.
Example: Polio virus is found in many human but it causes disesease in only 1% of human.
B) Viruses require host machinery for replication so they may not replicate in pure culture.
The postulate C is also violated, the virus may not produce disease in non-human experimental host because of inappropriate animal or vaccinated animal etc. Others exception includes, the same disease may be caused by various organisms and different organisms can also cause the same disease.
Answer:
the answer is B Rheumatoid arthritis
Explanation:
Answer:
Pwave
Explanation:
The P wave can move through solid rocks and fluids, like water or the liquid layers of the earth. So yes, P waves is the right answer. I hope I help.
Answer:
The first step of investigation is to verify the existence of the infectious disease outbreak
Explanation:
I'd say D cause ice is kinda more likely to do the job
