About how long ago did modern humans migrate to australia

Molecular clock estimates, genetic studies and archaeological data all suggest the initial colonisation of Sahul and Australia by modern humans occurred around 48,000–50,000 years ago. Over the last few decades, a significant number of archaeological sites dated at more than 30,000 years old have been discovered.

answer

the statement that best describes president carter’s attempt to free the hostages in iran is c. all of the attempts failed.

explanation

the operation eagle claw conducted by the united states armed forces was a failed mission which aimed to rescue 52 americans captured as hostages in the american embassy, tehran on 24/4/1980.the mission was authorized by president jimmy carter. the failures included;   obstacles in operation that included operational conditions challenges caused by sandstorms, hydraulic problems of one the helicopters and , mechanical failure of another helicopter that was identified as a cracked rotor blade and the crashing of another helicopter during mission abortion causing death of 8 service persons.