What did they use before calculators? already exists. already exists as an alternate of this question. exists and is an alternate of. When you're not busy performing, what do you like to do for fun? What must you do to non-perpendicular vectors before you can use the Pythagorean theorem to calculate the resultant of the vectors? Can the TI30xs ...
Virus: A microorganism that is smaller than a bacterium that cannot grow or reproduce apart from a living cell. A virus invades living cells and uses their chemical machinery to keep itself alive and to replicate itself. It may reproduce with fidelity or with errors (mutations); this ability to mutate is responsible for the ability of some viruses to change slightly in each infected person, making treatment difficult.
Prions and viroids are the smallest infectious agents. Prions are infectious protein particles, and viroids are infectious strands of RNA. Viroids differ from viruses iâ¦n that they are ONLY a strand of RNA. Viruses have a protein coat protecting the nucleic acid molecule and some even have a lipid layer over that.