Another name for a single-celled organism is A. uni-cellular
B. one cellular
C. multi-cellular
D. eukaryotic

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity

What produces wave a)sound b) heats c)transfer of energy d)vibrations

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?