Marie curie won the nobel prize in which of the following ?
biology
geology
physics
chemistry

physics and chemistry

Explanation:

1st nobel prize was in physics (1903) and 2nd was in chemistry (1911)

it provided for selection of government employees through competitive examinations. it also made it unlawful to fire or demote covered employees for political reasons or to require them to give political service or payment, and it set up a civil service commission to enforce the law.

explanation:

the causes of the dust bowls were severe droughts,   lands became dry and hard, temperature was higher than usual, hot and dry conditions killed crops, high winds. because of those factors, the winds kicked up dry soil and created clouds of dust.