What would need to occur first for life to evolve

What does it mean for a cell membrane to be selectively permable

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

Which sentence best describes the relationship between chlorophyll and the chloroplast? a.)chlorophyll is a chemical found in a chloroplast. b.) chloroplast is a chemical found in a chlorophyll. c.) both chlorophyll and chloroplasts are found in animals. d.) both chlorophyll and chloroplasts make carbon dioxide.