Please answer the 3 if possible!

[fw.02]sinkholes are often formed as a result of the actions of. a. heat on recharge b. pressure on aquifers c. acid in groundwater d. minerals in hot springs

5. there were nearly 1,000 pirate attacks between 1994 and 2005 off the coast of according to the international maritime bureau's annual piracy report for 2005.

What is a problem natives in both bolivia and peru face? a. extreme poverty c. discrimination b. limited access to resources d. all of the above