Which workers are involved in a tertiary economic activity?

a. teachers and government workers

b. fishers and ranchers

c. nurses and store clerks

d. factory workers and managers

Air masses are characterized by various properties including temperature humidity air temperature pressure and wind speed . which of the following air masses is associated with low relative humidity and high temperature

What is the main source of phosphorus?

Which would be most likely to contain a good aquifer—igneous rock, sedimentary rock, or metamorphic rock? explain what qualities of this rock type make it a good aquifer. 500 word minimum response