Question

1. which of the following processes add methane (ch₄) to the atmosphere?

breakdown of plant and animal remains in the soil.
leakage from natural gas pipelines.
food digestion by herd animals.
all of the above.

Explanation:

• Breakdown of plant and animal remains in the soil: Microorganisms can produce methane during decomposition.
• Leakage from natural gas pipelines: Natural gas is mainly methane.
• Food digestion by land animals: Some land animals (e.g., ruminants) produce methane during digestion.

Answer:

All of the above.