refers to enlarging jobs by combining several relatively simple jobs to form a job with a wider range of tasks.

This is known as job extension.

Explanation:

A job extension or job enlargement, refers to expanding a job's range by adding duties or responsibilities, mostly similar to the current responsibilities regarding that certain position.

It is the result of combining simple jobs in order for it to have a wider range of similar tasks.

world war i had a devastating effect on german-americans and their cultural heritage. up until that point   german-americans, as a group, had been spared much of the discrimination, abuse, rejection, collective mistrust experienced by so many different racial and ethnic groups in the history of the united states. indeed, over the years, they had been viewed as a well integrated and esteemed part of american society. all of this change with the outbreak of war.  

explanation:

allergens: overstimulate the nerve system

neurotics: attack nerve cells

mutagens: damage or otherwise alter dna sequence

generators: cause defects during growth and development  

carcinogens: cause unchecked cell growth

i hope you get the idea according to me these are the effects that happened.