How can Muslims account for these errors in the koran?

Pity on you little kid, You always find some quotes who are against Islam and post them over here but if you read Quran with the intention to getting to right path, you WILL find the right path. As far as mentioning of the pairs in Quran is concerned, I think that may be all the creatures may have some pairs but science may not have discovered it yet. Also remember one thing that Quran is not a book of 'Science' but it's a book of 'Signs'.