If Stalin and Hitler hated each other so much (and they DID!), why do they form a partnership (pact) in 1939?

ba geologist finds four sedimentary rock she determines that no geologic events have shifted the layers she labeles them a,b,c,dbfrom top to bottom

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.

the allies' desire to seek retribution for germany's actions