Fine pebbles are 2.0 to 5.0 mm in diameter. sand is 0.05 to 2.0 mm in diameter. which of the following statements is true? a. fine pebbles have a lower terminal fall velocity than sand. b. fine pebbles have a higher threshold velocity than sand. c. fine pebbles are more vulnerable to wind erosion than sand. d. fine pebbles in a river will be deposited after sand.

its i think c because its the lowering cloud

radiative zone

explanation    

radiative zone is the layer of the sun which energy is transferred away from the core by radiation. although, the core is the only part of the sun that produces an appreciable amount of heat through fusion. in fact, 99% of the energy produced by the sun takes place within 24% of the sun's radius.