The rank of greenhouse gas emissions at the global level, in decreasing order, is

ACarbon dioxide, Methane, Sulphur dioxide and Fluorinated gases

BFluorinated gases, Carbon dioxide, Nitrous oxide, Methane

CCarbon dioxide, Methane, Nitrous oxide and Fluorinated gases ✓ Correct

DMethane, Nitrous oxide, Carbon dioxide and Fluorinated gases

Correct answer: (C) Carbon dioxide, Methane, Nitrous oxide and Fluorinated gases

Explanation

In falling order of global share the greenhouse gases run carbon dioxide, methane, nitrous oxide and then fluorinated gases.

Carbon dioxide dominates the total by a wide margin from fossil fuel burning.

Methane comes next, largely from agriculture, livestock and fossil fuel leaks.

Nitrous oxide follows, chiefly from fertilisers and soil management.

Sulphur dioxide is an air pollutant and is not counted among the main greenhouse gases in this ranking.

Fluorinated gases are the smallest share but have extremely high warming potential per molecule.

Want more like this? Create a free account to practise a full test, track your progress, and get spaced-repetition review.