Some part of differentiation may have occurred very early in the ...

[Jkov05]

Some part of differentiation may have occurred very early in the first stage of planetary evolution as:
 
  A) the heat released by infalling matter melted the growing Earth.
  B) the heat released by radioactive decay melted the growing Earth.
  C) the heavy bombardment in the early Solar System cratered Earth.
  D) the heavy bombardment in the early Solar System formed giant basins.

Question 2

The Earth's core has a density of _____.
 
  A) 5.5 g/cm3
  B) 10.5 g/cm3
  C) 14 g/cm3
  D) 18.5 g/cm3

[shaikhs]

Answer to Question 1

A

Answer to Question 2

C

[Jkov05]

TYSM

[rleezy04]

Gracias!