List 15 sub level domain and their origination

What operating system is a smartphone most likely to use? 1.bsd 2.mac os x 3.symbian 4.linux

Which of the following is a way that advancements in technology improve humans' ability to measure air quality and protect human health? a. air quality data gathered by new instruments can be used to reduce exposure to pollutants. b. new technologies enable natural and human-made pollution sources to be located and monitored. c. air quality data gathered by new instruments can be used to predict trends in pollution over time. d. new technologies allow governments to make informed decisions about the regulation of pollution. (choose more than one)

The editing of digital photos us about the same level of difficulty as editing an analog photo