If clauses - Rephrasing, I have a doubt here

0 So..I was helping a friend of mine with some questions , but then it appeared this one:02br
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00--Rephrasing:02br
00--We care so little about the future that we are destroying our planet.02br
00--If...02br
02br
00My suggestion was:02br
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00"If we didn't care so little about the future, we wouldn't be destroying our planet."02br
02br
00Her teacher rephrased this to "care more". So I gave another try and suggested this:02br
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00"If we cared more about the future, we wouldn't be destroying our planet."02br
02br
00But NO; the answer her teacher gave was the following one:02br
00"If we care more about the future, we wouldn't destroying our planet."02br
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00He is the teacher so he should know more about this than me , but I have a few questions:02br
001) What type of if clause is that one? It uses future // conditional???02br
002) And what about "wouldn't destroying", does it even exist? I only know about "would destroy" or "would be destroying"02br
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00Please enlighten me.0-