The 7 (sometimes 8) characteristics of life are:
1. living things are composed of cells
2. living things have different levels of organization
3. living things metabolize (i.e. use energy)
4. living things respond to their environment
5. living things grow
6. living things reproduce
7. living things adapt to their environment
(some sources include) 8. living things have genetic material
Viruses do not metabolize, they do not grow, they do not adapt to their environment, and they cannot reproduce independently; viruses require host cells to reproduce and perform the other functions that give them the appearance of aliveness.
Stephen Crane was both a novelist and a C. reporter, although he left that other job and became a full time writer.
Convective zone is the answer. If you need an explanation just ask.
Hope this helps :)
It helps you follow procedures accurately in order to get higher, more accurate results and become a better medical professional