Answer:
We learned about unconditional love and loyalty, because Doodle loved him always, even when the narrator was treating Doodle with deliberate cruelty. We learned about gentleness and sensitivity. (We remembered watching Doodle struggle alone to bury the ibis.)
It might mean the destruction of a planet or of natural ecosystems.
Smilies compares things using “like” or “as” while Metaphors compare things without using “like” or “as”.
Semicolon basically means and. The answer is C. Understand why?