The smallest biological units that can evolve are

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

Rachel ate a piece of fruit and happened to drop the seeds in her backyard. after a few weeks, she saw a small plant with flowers growing in the backyard. which group does this plant belong to? a. angiosperms b. gymnosperms c. pteridophytes d. bryophytes e. chytrids

How is the carbon cycle related to global warming ?