What are the names of the three lines of latitude besides the equator?

What does the word submerged mean in the following sentence? after it rained for three days in a row, the streets were completely submerged.

Triangle with the the sides 72 and 75 and x. also other trsingle withsides 24 25 and 7. what is the value of x.

Iceland has taken advantage of its geology to meet a. political needs b. energy needs c. cultural needs d. economic needs answer b. energy needs