Answer:
a virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism.[1] Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea.[2][3] Since Dmitri Ivanovsky's 1892 article describing a non-bacterial pathogen infecting tobacco plants and the discovery of the tobacco mosaic virus by Martinus Beijerinck in 1898,[4] more than 9,000 virus species have been described in detail[5] of the millions of types of viruses in the environment.[6] Viruses are found in almost every ecosystem on Earth and are the most numerous type of biological entity.[7][8] The study of viruses is known as virology, a subspeciality of microbiology.
C - Teens do not need to worry about getting enough calcium<u> is false</u>.
The teen years show a growth spurt for most and calcium is the main minerals that strengthens the growing bones. Not enough calcium during those formative years can put the person at and increased risk for developing osteoprosis later in life.
4.a
5.d
those are the only ones i'm 100% sure about.
OK so I believe the best option for you to go with will be Pelvic inflammatory Disease.
