Answer:
The main difference between second generation (2G) and third generation (3G) technology is data. 2G services were developed with mostly voice services in mind, but are capable of providing relatively slow (14.4kbps) speed data services.
A. They can only be separate chemically
A machine called a centrifuge is used in many technologies and branches
of science, it uses rotary motion to separate material held in
suspension from the medium it is suspended in.
Answer:
O D. Allowing sensory play with no objective measurement
