Why have jobs in production decreased but not so much in marketing

Manufacturing jobs are waning. In many emerging market and developing economies, workers are shifting from agriculture to services, bypassing the manufacturing sector. In advanced economies, the rise in service sector employment typically reflects the outright disappearance of manufacturing jobs.

Explanation:The decline in manufacturing jobs is often met with anxiety. People are concerned that a smaller manufacturing sector implies slower economic growth and a scarcity of well-paying jobs for low- and middle-skilled workers—contributing to worsening inequality. In Chapter 3 of the April 2018 World Economic Outlook, we revisit the evidence supporting those beliefs and find that the declining share of manufacturing jobs need not hurt growth or raise inequality, provided the right policies are in place.

ans.

heterothermic organisms include those organisms that can switch between homeothermic (having body temperature higher than environment) and poikilothermic (having variation in internal body temperature) strategies.

some migratory birds show heterothermy as they decrease their metabolic rate during cold nights to keep their body temperature low. drop in metabolic rate allows increase in production efficiency of birds that reduces the internal body temperature to make it equal to external cold temperature during cold nights.

thus, the correct answer is 'birds allow their temperature drop in order to increase their production efficiency.'