Question

question 11
scientists discover that the levels of methane gas are rising from the decomposition of materials, which pollutes the air.
which type of waste disposal most likely caused this phenomenon?
combustion
landfill
ocean dumping
recycling

Explanation:

In landfills, organic waste decomposes anaerobically (without oxygen), producing methane gas. Combustion mainly produces carbon - dioxide and other gases, ocean dumping doesn't typically produce significant methane from decomposition in the context of air pollution, and recycling doesn't produce methane from decomposition as part of its process.

Answer:

B. Landfill