What was one of the challenges Dr. Salk faced in his attempt to create a polio vaccine? (10 points) a
b
OOO
Dr. Salk did not have enough money to pay for his research and supplies.
Dr. Salk had to create one vaccine that was effective against three different viruses.
Dr. Salk had to convince government officials to allow him to test the vaccine.
Dr. Salk's idea for a vaccine was not supported by other scientists and physicians.
с
d
Question 4(10 points)
Read the entry on Jonas Salk from Compton's Encyclopedia/The Britannica School Edition, and answer
Compton's Encyclopedia

Nikolai gogol, "the nose" what can you infer about ivan jakovlevitch from his reaction in this passage from "the nose"? o a. that he was angry at kovaloff and cut off his nose o b. that he loves his wife and wants her to think kindly of him o c. that he often finds body parts in the food at his house o d. that he is often blamed for things that are not his fault

Which detail from the text most strongly supports the inference that releasing a pet into the wild can change the balance of nature within an enviorment

Read this passage from geoffrey lean’s “one poor harvest away from chaos”: on wednesday, the food and agriculture organisation (fao) reported that global food prices has hit a record high and were likely to go on rising. . that is bad enough for britain, adding to the inflationary pressures from the soaring cost of oil and other commodities, not to mention the vat increase. but for the world’s poor, who have to spend 80 percent of their income on food, it could be catastrophic. why is the passage an example of deductive reasoning? a. the author is appealing to the feelings and emotions of the audience b. the author starts with specifics, using them to probe a general point. c. the author is starting with a general topic and moving to more specific information d. the author is showing that he biased against poor people