What capability do smartphones have that telephones with earlier technology lacked? wireless technology
data services
mobility
voice transmissions

You install teamviewer on your workstation at home so that you can ac ess it when on the road. how can you be assured that unknown users cant access your computer through team viewer?

Scientists have changed the model of the atom as they have gathered new evidence. one of the atomic models is shown below. what experimental evidence led to the development of this atomic model from the one before it? a few of the positive particles aimed at a gold foil seemed to bounce back. the colors of light emitted from heated atoms had very specific energies. experiments with water vapor showed that elements combine in specific proportions. cathode rays were bent in the same way whenever a magnet was brought near them.

Aspeed limit sign that says "night" indicates the legal speed between sunset and sunrise.