As they move through space, the vibrating electrical and magnetic ...

[bobbysung]

As they move through space, the vibrating electrical and magnetic fields of a light wave must move perpendicular to each other.
 
  Indicate whether the statement is true or false

Question 2

Based on DNA studies, it seems that all life on Earth ________.
 
  A) arose from one of five distinct ancestors that lived about two billion years ago
  B) shares a common ancestor
  C) requires oxygen to survive
  D) belongs to one of just two kingdoms: plants and animals

[smrerig]

Answer to Question 1

TRUE

Answer to Question 2

B

[bobbysung]

YES! Correct, THANKS for helping me on my review

[yeungji]

Thanks for the timely response, appreciate it