3. is the socio-economic change experienced by industrialized countries a prerequisite or a consequence of demographic transition?​

Which of the following is an example of negative reinforcement? a.marty knocks over his mother's prize fern so she gives him a time out. b.gwen mows the lawn and her dad takes her out for ice cream. c.tara takes an aspirin, and her headache begins to go away. d. peter comes in late from his lunch and is fired from his job.

Which of the following is not one of the seven points from the pre-start checklist recommended by the nsc

  usually, loads of more than pounds require the assistance of a second person.           a. 40   b. 20   c. 50   d. 30