<u>2)</u>
<em>AD</em><em>|</em><em>|</em><em> </em><em>CB</em><em>,</em><em> </em><em>AB</em><em> </em><em>|</em><em>|</em><em>EF</em>
Hope this helped you- have a good day bro cya)
Answer:
6
Step-by-step explanation:
They all contain matter, none of them are entirely empty and they all have gases inside, with the exception of B, which is water, which is a liquid