PART 1
1) they always have nucleic acid of either DNA or RNA, and a protein coat.
2)they can have a single-stranded DNA or double-stranded DNA
3)
4)a example of a animal disease is Coronaviruses and an example of a plant disease is Tobacco mosaic virus
5)They are neither living nor they are non living because when they are inside an organism they are alive and can reproduce but outside the organism they are not alive, because they dont have the ability to reproduce outside the living organism.
6)yes there are! there are viruses that fight cancer.
PART 2
Norovirus is an RNA virus that has struck in U.K and has sickened a lot of France and New Zealand and has now found its way to America sickening over 267 million people around the world. Racing person-to-person across the country. It's a severe stomach flu that is easy to get, and hard to prevent. It is transmitted by fecally-contaminated food or water, by person-to-person contact, and via aerosolization of the virus and subsequent contamination of surfaces. Many more of us, perhaps 50% more, could become violently ill. There are now flu shots for Norovirus. Norovirus had caused over 200,000 deaths and is very dangerous. Norovirus started in 2009.
this is a video of Norovirus : http://www.bbc.co.uk/news/health-20790061
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