The two main ideas explored in this passage are in the story
climate change

Hello. You have not shown the passage to which this question refers, which makes it impossible for me to answer you exactly.

However, when dealing with an excerpt on climate change, we can consider that the main ideas of the excerpt would expose the complexity and the devastating power of these climate changes, the processes that cause them and the attitudes that humanity must assume to reduce these changes as much as possible .

authors choose a genre based on their purpose. fiction works well for teaching a lesson, as in fables. however, presenting facts and opinions in nonfiction might be a better way to present information. when authors begin to write, they think about what they want the reader to understand or experience. while fiction may be the best genre for storytelling, nonfiction may be the most clear for sharing facts, so both genres have merits.