Hurry i need your 20 points plus brianliest answer
jose and karl were both exposed to the influenza virus at work. jose had a flu shot made from killed influenza virus six weeks ago, but karl has not gotten around to getting his vaccinations yet. are they likely to get sick from this exposure to the virus, and what is likely to happen if they are exposed to it again?

both karl and jose are likely to get sick this time since jose's vaccine was dead, but neither will get it again once they acquire active immunity.
karl will get sick and jose will not this time, but neither will get this influenza again since they both will have acquired active immunity to it.
karl will get sick and jose will not this time, but jose will be more likely to get it later since his immunity will be less recent than karl's.
both karl and jose will get sick this time since jose's immunity has had time to wear off, but karl is more likely to get it again since he has only been exposed once.

What adaptations can prey use to avoid predation

To answer this question, researchers studied populations of the dusky salamander (desmognathus ochrophaeus) living on different mountain ranges in the southern appalachian mountains. the researchers tested the reproductive isolation of pairs of salamander populations by leaving one male and one female together and later checking the females for the presence of sperm. four mating combinations were tested for each pair of populations (a and b)—two within the same population (female a with male a and female b with male b) and two between populations (female a with male b and female b with male a). the proportion of successful matings for each mating combination was measured. for example, when all the matings of a particular combination were successful, the researchers gave it a value of 1; when none of the matings were successful, they gave it a value of 0. then the researchers calculated an index of reproductive isolation that ranged from 0 (no isolation) to 2 (full isolation). the reproductive isolation value for two populations is the sum of the proportion of successful matings of each type within populations (aa + bb) minus the sum of the proportion of successful matings of each type between populations (ab + ba). the table provides data for the geographic distances and reproductive isolation values for 27 pairs of dusky salamander populations.

What type of organism is a one-celled organism that functions as a single unit? a. bi-celled b. single-celled c. pre-celled d. multi-celled