Select the correct answer. Which layer of Earth is the densest and why is that so?
A.
The outer core is densest due to gravitational compression.
B.
The outer core is densest due to generation of radiogenic heat.
C.
The outer core is densest due to accretion.
D.
The inner core is densest due to gravitational compression.
E.
The inner core is densest due to generation of radiogenic heat.

Two horses begin at rest. after a few seconds, horse a is traveling with a velocity of 10 m/s west, while horse b is traveling with a velocity of 13 m/s west. which horse had a greater acceleration? a. horse a because its change in velocity was greater than horse b's in the same time. b. horse b because its change in velocity was greater than horse a's in the same time. c. horse b because its change in velocity was the same as horse a's, but it took less time. d. both horses had the same acceleration.