Which two of the following statements best express the central ideas of the text?

Unstable stock market bubbles can be one of the most dangerous threats to a country’s economy.

The Great Depression was one of the greatest economic crises in American history and had far-reaching effects, even beyond U.S. borders.

The Great Depression severely impacted the daily lives of all Americans, except the upper class who went on largely unscathed.

FDR’s reforms helped bring about the end of the Great Depression and continue to shape American economic policies today.

Explanation:

does are the choices which one is it

what are local authorities doing to fix the problem

explanation: what are local authorities doing to fix the problem

genetics is the study of how dna works, the methodologies defining the new recent technologies allow scientist to have a panoramic view of the entire dna landscape, especially how genomes interact with their environment, including off course, factors outside their organisms.

thus is very possible the existence of both scenarios, where populations of isolated individuals have different genetic traits, and share traits related to genetic mutation, due rats can easily travel overseas using human transport channels. so scientists could get a vast number of data, including human interaction, evolution of rodents, health development, spread of infections, development of new organisms, how genomes evolve in different environments and so on.