Answer:
i think its 2
Explanation:
because the H2 is seperate from the others it is the only one with a number.
Karst topography can cause drinking water to become more polluted
it allows plants to survive and continue to reproduce
There are many properties to substances.
I'll list some examples below:
- Mass
- Volume
- Density
- Conductivity
- Malleability
- Boiling point
- Melting point
- Heat capacity
Hope this helps! :3
