Will mark brainliestdo you think that the influenza virus is an active virus or a hidden virus? explain your reasoning.

Because of the fact that the influenza virus' incubation period (the period of time in which it remains inactive within you) is a matter of days than weeks, months, or even years, as some viruses can stay, influenza must be an active virus, attacking you almost as soon as you contract it.

answer; ///i believe that the correct answer is (a) specialized cells)

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.