1 Virology is often considered as a part of microbiology
2 Viruses can be classified according to the host cell they infect: animal viruses, plant viruses, fungal viruses,and bacteriophages (viruses infecting bacteria, which include the most complex viruses).
3 Another classification uses the geometrical shape of their capsid (often a helix or an icosahedron) or the virus's structure (e.g. presence or absence of a lipidenvelope).
4 A virus is a small infectious agent that can replicate only inside the living cells of organisms.
5 Viruses are found in almost every ecosystem on Earth.
6 Viruses cause a number of diseases in eukaryotes.
7 Viral infections in animals provoke an immune response that usually eliminates the infecting virus.
8 The evolution of viruses, which often occurs in concert with the evolution of their hosts, is studied in the field of viral evolution.
9 While viruses reproduce and evolve, they don't engage in metabolism and depend on a host cell for reproduction.
<span>Если говорится об определенном предмете. После предлогов места. С фамилией, если речь идёт о всей семье. Со сторонами света. С порядковыми числителями. С прилагательными в превосходной степени.</span>
1 She doesn't speak Italian very well.
Does she speak Italian very well?
2 They won't go to the zoo tomorrow.
Will they go to the zoo tomorrow?
3 All my friends don't swim very well.
Do all my friends swim very well?
4 He didn't watch a cartoon yesterday.
Did he watch a cartoon yesterday?
5 My cousin George doesn't live in Moscow .
Does my cousin George live in Moscow?
Its Christmas time out there.
Everyone is runnning around and trying to do last things till the Christmas.
Parents buying toys for their kids.
Kids making snowmans and playing in snow.
Christmas time is family,love and peace time.
And dont forget about Christmas tree.
- что сделать здесь надо?