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.
Noun. 1. retrovirus-any of a group of viruses that contain two single-strand linear RNA molecules per virion and reverse transcriptase (RNA to DNA); the virus transcribes its RNA into a cDNA provirus that is then incorporated into the host cell. animal virus-an animal pathogen that is a virus.etÂ·roÂ·viÂ·rus. Any of a group of viruses containing RNA in which the RNA can convert to DNA inside a cell. Some retroviruses cause cancer in humans. The virus that causes AIDS is a retrovirus.