An analog video is a video signal transmitted by an analog signal, captured on a BLANK?

Ineed a good science fair name i’m doing a homemade water filter and i have no idea what the title should be plz

You have read about the beginnings of the internet and how it was created. what was the internet originally created to do? (select all that apply) share research. play games. communicate. share documents. sell toys

Self contained sequences of actions to be performed are? a. expressions b. algorithms c. functions d. formulas