Which is a trigger for asthma attacks?
a: air pollution
b: lack of vitamin d
c: bacterial infection
d too much sugar

The virus genome and viral proteins are assembled into virions (virus particles) during ) the lytic cycle and the lysogenic cycle in all known host organismsb) the lysogenic cycle onlyc) the lytic cycle onlyd) the lytic cycle in all host organisms but the lysogenic cycle only in bacteria