Which Era followed the Paleozoic era?

Haley rubs a cotton cloth along a plastic strip. the plastic strip becomes positively charged. why did this happen? a. the plastic strip gained protons from the cotton. b. the plastic strip lost protons to the cotton. c. the plastic strip gained electrons from the cotton. d. the plastic strip lost electrons to the cotton.

Avalue that describes how heavy an object is and is related to the force of gravity is

What are the applications of electromagnetic waves