Starch can be converted to ethyl alcohol by?

Structural unemployment: skills dont match available jobs (technology changes, industry decline). Requires retraining. Frictional unemployment: temporary, between jobs (searching, moving). Healthy sign of labor mobility.

Cyclical unemployment: caused by economic downturn (recession reduces demand for workers). Recovers when economy grows. Seasonal unemployment: work unavailable certain times (farming off-season, tourism).

Full employment doesnt mean zero unemployment – frictional and some structural unemployment always exist. Nigeria faces high youth unemployment partly due to skills mismatch with job market needs.