Put Memes here because why not!​

Which of the following discoveries would be most likely to cause a scientific paradigm shift? a. the discovery of more rings around uranus b. the discovery of a new pathogenic virus transmitted by mosquitoes c. the discovery that a dormant volcano is showing signs of activity d. the discovery of a new species of salamander in the amazon rainforest e. the discovery that excess heat is radiating from the center of the earth and causing global climate change

Toward the end of the roman empire, what caused a decrease in the use of coined money tell me now

On a production possibility curve, data points that fall outside of the curve represent what