Explain how agricultural practices can lead to increased methane emissions into the atmosphere.

Agriculture increases methane emissions mainly through the production of livestock such as cattle and through rice cultivation. In cattle, the digestive process called enteric fermentation produces methane as a by‑product, which is released when the animals belch. In flooded rice paddies, anaerobic conditions cause microorganisms to break down organic matter, producing methane that is then released into the atmosphere.

The answer demonstrates understanding of the two key agricultural sources of methane – enteric fermentation in ruminants and anaerobic decomposition in rice paddies – and explains the biological processes that generate the gas.