future and future continuous tense

0 What are the instructions for the practice?02br
00 Are you supposed to make one of these simple future and the other one future continuous?02br
00 Or can you make both of them simple future? Or can you make both of them future continuous?02br
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00 CJ0-

0 I don't know. That's why I asked for help. There might be only one answer to each blank. Sould we fill in the future tense or future continuous tense here? I think only a native speaker knows how to do it. 0-

0Wait! I think I have already found the answer.02br
02br
00Neither the future nor the future continuous tense would have to be used here, but "Future perfect tense". In less than a century is the key to using such tense.02br
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01font00In less than a century, global warming 01font00will have melted

0Hi,02br
02br
00Welcome to the Forum.02br
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00This is fine.02br
02br
00Clive0-

0 Given the choices, I would use simple future for both blanks.02br
02br
00 CJ0-

0 I second that! 0-

Can the expression 'in less than a century' trigger the present perfect?

In less than a century, global warming has melted most of the polar ice caps.

Yes, but that would indicate that the polar ice caps started melting less than a century ago and have vanished now