How does a neutral atom become an iron

How does the author's purpose in this passage differ from an author writing about her personal struggle living with asthma?

Flock x flock y flock z total pieces of food eaten (from previous page) 147 93 60 food percentage* % % % simulated number of birds in flock for 3rd generation** * divide each flock's total pieces of food by 300, the total number of pieces of food eaten. ** multiply the food percentage for each flock by the total number of birds (30).

What if the yeast were extremely active and produced more than 100ml gas. would you know? why/why not