<span> A graduated cylinder can be used to measure the volume of a regular solid. the object will increase the volume of water and then you can measure its volume.</span>
Long term Technology can lead to eye problems and eye diseases and sometimes blindness, and technology will emit radiation which can lead to cancer and other health problems, also technology often leads to long term sitting which can lead to obesity and deadly diseases, however you can use technology to monitor your excercise and also you can use it for healthy recipes and workout routines etc.
Both a and b, you wouldn't want to be driving in the dark would you?
