Beyond the answers - interesting background to this quiz

The Sahel: a belt of transition, not a country

The Sahel is a semi-arid band of land that stretches across Africa, running along the southern edge of the Sahara and separating the desert from the wetter savannas further south. Mauritania sits within this zone, which is why it is a Sahelian country, while France and Australia are not. The region is known for its dry climate, sparse vegetation and the fragile balance between desert and farmland.

Why the equator shaped a country's name

Ecuador takes its name directly from the Spanish word for equator, since the line of latitude runs straight through the country. The equator is the imaginary circle that divides the Earth into the Northern and Southern Hemispheres. Countries located along it tend to have warm climates all year round, with little variation in daylight hours between seasons.

Coffee's journey from Africa to the world

Coffee is believed to have originated in Africa, with Ethiopia often cited as the birthplace of the coffee plant. From there, it spread to the Arabian Peninsula and later to Asia, Europe and the Americas. Today, coffee is grown in many tropical regions worldwide, but its roots remain firmly in the African highlands.

The Euphrates: a river through history

The Euphrates is one of the great rivers of the Middle East, flowing through Turkey, Syria and Iraq. Along with the Tigris, it helped support some of the earliest known civilisations in Mesopotamia, often called the cradle of civilisation. Turkey is one of the countries the river passes through, which makes it the correct answer in this quiz.

Photosynthesis: how plants make their own food

Photosynthesis is the process by which plants use sunlight, water and carbon dioxide to produce food, releasing oxygen as a by-product. It takes place mainly in the leaves, where the green pigment chlorophyll captures light energy. Without photosynthesis, life on Earth as we know it would not be possible, since it forms the base of most food chains.