Answer and Explanation:
<u>When I hear the word "challenges", I usually think of obstacles and difficulties, which means the word has a negative connotation to me.</u> However, I do understand the necessity and importance of having challenges in life.<u> Based on my prior experiences, I have come to believe challenges are what makes us grow and learn</u>. Without any opposing force, we would not develop strength and resilience. Without a bit of fear, we would never know the thrill of an accomplishment.<u> Of course, challenges can be harmful too. When they are too big or when the situation is unfair, a person can end up too frustrated to persist.</u> When a challenge demands too much emotional energy, it might become a trauma, perhaps even causing anxiety in the future.
Refineries are places where a substance is refined. It could be any substance, really. But, taking into consideration the options we have available, we could conclude that the specific refinery being referenced here is <em>natural gas. </em>This is a common material in plastic, DVDs and crayons, while bauxite, petroleum, and iron are never used in the manufacturing process of these everyday items.