Biology Forums - Study Force

The youngest parts of Earth's crust are
 
  a. the bottom layer found in the walls of the Grand Canyon.
  b. the continents.
  c. the continental margins.
  d. the Appalachian Mountains.
  e. the midocean rifts.

Question 2

Shapley found the distance to the center of the galaxy by studying the distance to open clusters.
 
  Indicate whether the statement is true or false

Question 3

Earth's magnetic field is generated by the dynamo effect in the
 
  a. molten metallic core.
  b. solid central core.
  c. plastic mantle.
  d. the crust.
  e. aurora.

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I know this sounds cliche, but I was thinking the same thing for each of these. Thanks for confirming :)

I'm sure ;) Thanks for your honesty