Atoms are held together by A) the electrostatic force of ...

[eruditmonkey@yahoo.com]

Atoms are held together by
 
  A) the electrostatic force of attraction between the protons in the nucleus and the surrounding electrons
  B) the combined electrostatic force of attraction between the protons and neutrons in the nucleus and the surrounding electrons
  C) the force of gravitational attraction between the protons in the nucleus and the surrounding electrons
  D) the electrostatic force of attraction between the neutrons in the nucleus and the surrounding electrons

Question 2

Carbon isotope evidence from rocks found on an island off the coast of Greenland, although controversial, suggests that life may have
 
  A) existed and was well established by3.4 to 3.5 billion years ago
  B) originated about 3.4 billion years ago
  C) existed 3.85 billion years ago
  D) originated when the Earth formed 4.6 billion years ago

[akemokai]

Answer to Question 1

A

Answer to Question 2

C

[eruditmonkey@yahoo.com]

TYSM

[TheNamesImani]

Excellent