The answer to this question is A. Jet streams
Jet streams are located near the altitude of the upper troposphere. It's a movement of wind that travels from one side of the planet hemisphere to another. The movement of jet streams will bring up different temperature of air which could influence the weather that exist in certain regions.
Hi! :)
Historical perspectives change over time depending upon the biases of the writer.
The correct answer is C) "These instincts-both innate and built over time--are key to the success of some of the most dangerous missions ever attempted."
The quotation that supports the idea that instinct is an important part of grit is "These instincts-both innate and built over time--are key to the success of some of the most dangerous missions ever attempted."
This is correct because instincts are that inner part of you that communicates with you in the key moments before making important decisions in your life. Let's have in mind that past experiences and previous life decisions and actions help you gain the knowledge, that combined with your instincts,, allow you to make a much better decision in the present time. And what follows is a true, committed work with perseverance to be successful.