How can online school be sooo boring and difficult at the same time?? T^T

What statement is true about all chemical changes? a) chemical changes can be undone. b) chemical changes cannot be reversed. c) chemical changes change the color of objects. eliminate d) chemical changes do not form new products.

1  2  3  4  5  6  7  8  9  10  below is a chart representing portions of résumés from three applicants.                                      excerpts from résumés of three job applicants  job expertise    applicant 1  developed effective techniques for keeping order in the classroom    applicant 2  effectively designed a program for new employees    applicant 3  took many courses in child psychology and human development      which  best  explains the applicants’ careers?

Working to improve the working conduit a factory is an example of