How people live before technology existed?

Is it possible toexecute a code after the program exits the main function? What is visibility mode what are the different inheritance visibility modes support by c plus plus? What are some problems associated with the use of nonrenwable energy? What is the ampere capacity 4 square cable? Which type of ladder is non self-supporting has one section and has a fixed length which is determined by the length of the side rails? What is molecular weight of SAE 40 oil? What is the correct way to apply Teflon tape to a threaded piece of steel pipe? Will the force applied to lift a brick reduce if you use pulleys? What is the best way to study a small section of an existing factory? Which is false There are costs associated with technology The government pays for expensive scientific research Science builds on itself Technology always helps society? What is the nickname of the robot on newsround? Which phase of the Systems Approach to Training process is used continuously? How do you stop pointer of touchpad from jumping around screen? What are the advantages and Disadvantages of large business to the society? Arc welding can you use it on a car ok? How would you define artificial intelligence? What is the value of a resistor with brown black red and silver? Example of predefined function? Interesting facts about the wheelbarrow? What is tangential velocity of turbine?