What is the best way to solve a conflict?

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

During the late 19th century, russia's settlement and development of siberia was made possible by the invention of the

The physical feature that makes up part of the border between canada and the united states is the