in a discussion kyan cities a recent article in a scientific journal that backs up his point about the benefits of nuclear energy. Which discussion technique is he mostly clear using?

He is using a technique called "Think, Pair, Share".

Explanation:

"Think, Pair, Share" is a discourse technique widely used as a learning method that can be adapted to different scenarios, and can even be adopted during a debate or speech.

This technique insists that for an argument to be effective, it must first be thought, reasoned and researched by an individual. The second one, called "pair", states that the individual must gather arguments and references that prove what he researched and what he is defending. Last, but not least, the individual must hold everything that I gather and defend his position on the subject, just as Kyan did. That's because Kyan, after thinking and researching his topic, found an article in a scientific magazine that confirms his argument about the benefits of nuclear energy.

the california missions began in the late 18th century as an effort to convert native americans to catholicism and expand european territory. there were 21 missions in all, lasting from 1769 until about 1833.   the missions were built by the spanish starting in 1769 in order to “colonize” the territory of alta california. so the missions were important because they were the means of settling california. it also wanted to keep other european countries out of alta california. building settlements along the coast would them meet these goals. missionaries wanted to convert the indians to the roman catholic faith. california indians did much of the work to build missions.

porter is writing economic history because he is focusing on the cost of developing vaccines.