Convection currents transfer thermal energy a. between continents b. from cooler regions to warmer regions c. from warmer to cooler regions d. as a result of buoyancy

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"Option C"

Convection currents transfer heat from warmer regions to cooler regions

Convection currents transfer heat from one place to another.

Convection currents transfer thermal energy from warmer to cooler region.

Option C

Explanation:

Thermal energy is transferred by convection from hot places to cold places. It is form of "kinetic energy" that is transferred as heat. When the hot liquid or gas becomes cool liquid or gas then convection happens. Then the cooler gas or liquid will goes to the place of hotter gas or liquid. This results in a "continuous circulation sequence".

"Water boiling" in a beaker is one of good examples of these "convection currents". Atmosphere is also example of convection. The Earth surface gets heat by sun the warm or hot air rises and cool air moves in. Other options are incorrect as thermal energy transfers from warm to cool places by convection.

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.