Concatenate partitions

[Sangohn Christian]

I have many partitions on my Linux harddrive as follows
/dev/sdb1                       /               ext2    defaults,errors=remount-ro     
 0       1
/dev/sdb5                       none            swap    sw                             
 0       0
proc                            /proc           proc    defaults                       
 0       0
/dev/sdb6                       /usr            ext2    defaults                       
 0       2
/dev/sdb7                       /home           ext2    defaults                       
 0       2
/dev/sdb8                       /opt            ext2    defaults                       
 0       2
/dev/sdb9                       /var            ext2    defaults                       
 0       2
/dev/sdb10                      /tmp            ext2    defaults                       
 0       2
/dev/sdb3                       /sto            ext2    defaults                       
 0       2

Is it possible to concatenate partitions sdb9 and sdb10 to one partition without 
affecting the other partitions?

Thanks
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