1. Viruses such as avian (bird) flu and swine flu that mutate and can spread from animals to human populations are known as what? O A. Vectors
O B. Transmuting viruses
O C. Epidemics
O D. Zoonoses

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

the answer is c most of the fortnite players usually buy v bucks to get the battle pass and other cosmetics but some players who are referred to as "no skins" don't   buy skins and are usually noobs.

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i believe the answer would be b. hope it : )