Which statement about polymers is true? A. Polymers are substances that have relatively large molecules. B. Oil and gas are the starting materials for making all polymers. C. Fabrics such as cotton and silk are synthetic polymers. D. All polymers are obtained from living organisms.

Smog is the term used to describe the combination of fog and smoke

Which of the following are sources of revenue for media companies? a. direct sales to producers b. advertising and subscriptions c. online purchase d. capital investments

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.