This is for someone please dont answer thank you

Why does lewis thomas express concern about what we would say to beings from another planet

Which sentence you is an example of chronological structure in “the city without us”?

If the four main points of this informational speech were changed 1. part-time job interviews ii. summer job interviews iii. college entrance interviews iv. full-time job interviews organization type would change from a. topical, cause-effect b. chronological, topical c. spatial, chronological d. cause-effect, spatial