If if soil is permeable then a compound of hydrogen and oxygen easily flows through that soil, then if soil is permeable then what easily flows through the soil?

Answer choices:
- bacteria and algae
 - A compound of hydrogen and oxygen
 - solid, liquid, gas
 - marshes and swamps
 - the wearing away of rock
 - basic building blocks of life
 - plankton and nonliving organic
 - To another location like underground

 

  A compound of hydrogen and oxygen        