"The Letter to the Treasurer of Spain" is a *
primary source
secondary source

Exploration mission 2;

The answers are/ (b) climate refers to long term atmospheric,conditions weather refers to short term.

Many foreign companies buy/build hotels in areas therefore most of the profit from tourism goes to these companies rather than the local economy or local people. 
also, these foreign companies might only employ foreign workers with experience meaning they receive more pay whereas local people would be employed for low skilled jobs and lower pay. 

thats all i can think hope it : )