How are the excerpts from the preface of the pluto files and the interview, “astrophysicist chronicles battle over pluto,” different?

Which statement regarding the distribution of wealth by the mid-19th century is most accurate?

What is the purpose of the system of checks and balances

How does the grapes of wrath identify the effects of americans' views on the dust bowl? the story is a depiction of oklahoma farmers and the difficulties they experienced migrating to california. the story accurately describes the impact the california vineyard industry had on migrant workers. the story covers the rise of corporate farming and the devaluation of the small family farms that dotted the great plains. the story is an allegory for the conflicts between american values and the rise of the communist party in the united states.