Answer:
The Andes were formed by tectonic activity whereby earth is uplifted as one plate (oceanic crust) subducts under another plate (continental crust). ... When this large portion of dense material was removed, the remaining portion of the crust underwent rapid uplift.
1.A selfish person is incapable <em><u>of</u></em> true friendship.
2.How much time do you spend <em><u>on</u></em> homework?
3.Good friendship should be based <em><u>on </u></em>mutual understanding.
4.Do you keep in touch <em><u>with</u></em> any school friends?
5.Some adults have a total lack <em><u>of</u></em> sympathy <em><u>for</u></em> young people.
6.She had been briefly acquainted <em><u>with</u></em> him more than 20 years earlier.
7.Some people take <em><u>up</u></em> interest with enthusiasm, but they are soon tired <em><u>of</u></em> it.
8.She has learnt English for three years, and she is good <em><u>at</u></em> English now.
9.I wish Carol would take a holiday. It would be good <em><u>for</u></em> her health.
10.Mary always takes care <em><u>of</u></em> her children carefully.
11.It was very kind <em><u>of</u></em> you to help me with that difficult work.
12.You were very kind <em><u>to</u></em> me when I asked you for some help.
Explanation:
reading for enjoyment is just an activity you are doing to overcome your boredom and it is just for entertainment but when you analyse a play you are more curious to know about the theme of the play how the character act in the play and everything u notice in the play very attentively.
To do I think I hope this helps