Identify the gas from the statements below: (1) A powerful greenhouse gas is released that accelerates climate change; (2) Wetlands are the largest natural source of that atmospheric gas in the world.

Methane is the powerful greenhouse gas that speeds warming and whose largest natural source is wetlands.

Carbon dioxide is the leading greenhouse gas by volume, but wetlands are not its main natural source.

Water vapour is a strong natural greenhouse gas, yet it is not the one wetlands release most.

Nitrous oxide is a potent greenhouse gas linked mainly to soils and fertilisers, not chiefly to wetlands.

Wetlands generate methane as microbes break down organic matter in their waterlogged, oxygen-poor mud.

Over a century, methane traps far more heat per tonne than carbon dioxide does.