What was the primary motivation for the draining of lake beds in mexico city?
a. to reduce the risk of flooding
b. to prevent the spread of diseases
c. to protect the city from invaders
d. to mine for gold under the lake beds

There is only one climate type in motion across the world at a time

You have been tasked with sorting the rock samples shown into three categories, with two rocks in each category. what attribute would you use to sort these rocks? which rocks would be in each category? rocks: obsidian, coquina limestone, granite, soapstone,pumice, and gneiss.

Compare and contrast cuba's economy with the economies of the other caribbean countries.