As a Microbiology student, suggest whether corona virus infection is caused by Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) caused by an antigenic shift or an antigenic drift. (Please note that there is a correct answer but this is dependent on your explanation)

Why is it often difficult to get funding for local parks? a. state governments do not like to grant permits for local parks. b. federal regulations prohibit most fund raising. c. there is often a small tax base. d. federal funding cuts have all but stopped local construction of parks.

Which of the following best reflects what we know about how the flu virus moves between species? a) the flu virus in a pig is mutated and replicated in alternate arrangements so that humans who eat the pig products can be infected.b) a flu virus from a human epidemic or pandemic infects birds; the birds replicate the virus differently and then pass it back to humans.c) an influenza virus gains new sequences of dna from another virus, such as a herpesvirus; this enables it to be transmitted to a human host.d) an animal such as a pig is infected with more than one virus, genetic recombination occurs, the new virus mutates, the virus is passed to a new species such as a bird, and the virus mutates again and can now be transmitted to humans.

Which one is not a part of the base of the cranial cavity? a.scala anterior b.scala media c.scala lateralis d.scala posterior