Can you help with information related to the challenges and rewards

Human resource management and its challengesBriefly argue about the following:Of the following challenges:>Strategic and global challengesTechnological challenges>Challenges in productivity and costs>Employee challengesWhich do you understand represents the greatest difficulty for the human resourcesprofessional? Why?When setting out your answer, consider the following:What do the concepts of human capital and human resource management mean?Explain in your own words.