You are presented with the question "If soil is permeable then what easily flows through the soil?" and the following 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

Now knowing that if soil is permeable then water easily flows through that soil and water is a compound of hydrogen and oxygen, choose the best answer.


 

  A compound of hydrogen and oxygen       