Isaac is conducting an experiment about static electricity. He rubs a balloon against his head to create an electrical charge and places it close to a soda can. What could be a control for his experiment? Another charged balloon

A neutral environment

Another person

An uncharged balloon

The hypothesis of continental drift states that earth's continents, which are located on tectonic plates, move relative to each other. which of the following is true of the movement of the tectonic plates? a. tectonic plates only move once every million years. b. they move at a rate of approximately 5 centimeters per year. c. tectonic plates never move, only the continents located on them do. d. their movements are very rapid and occur at random times.

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?

What substance acts to prevent sudden ph changes in bodily fluids?