<span>4) Formation of a gas
When methane burns, it produces the gases water vapor and carbon dioxide.
</span><span />
Karst is a topography formed from the dissolution of soluble rocks such as limestone, dolomite, and gypsum. It is characterized by underground drainage systems with sinkholes and caves. It has also been documented for more weathering- resistant rocks, such as quartzite, given the right conditions.
Answer:
-3+3 i think this is the answer
Explanation:
i think you can ask someone else sorry