Help with these, please!

I need to know the Pros and Cons of these articles ( in each science project). I just attached the links

How much does light intensity change with distance? At least 3 Pros and 3 Cons

https://www.sciencebuddies.org/science-fair-projects/project-ideas/Astro_p034/astronomy/how-does-light-intensity-change-with-distance

How much DNA can you pack into a cell? At least 3 Pros and 3 Cons

https://www.sciencebuddies.org/science-fair-projects/project-ideas/Genom_p013/genetics-genomics/how-much-dna-can-you-pack-into-a-cell

Thank you!

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