What is the primary cause of global warming? MCQ with Answer and Explanation

Explanation:
El Niño is the warm phase of the El Niño-Southern Oscillation (ENSO) and is characterized by above-average sea surface temperatures in the central and eastern equatorial Pacific.

Explanation:
The Sahara Desert is the largest hot desert in the world, covering an area of about 9.2 million square kilometers across North Africa.

Explanation:
During the equinoxes (around March 21 and September 23), the Sun's rays are directly overhead at the equator, resulting in nearly equal day and night lengths worldwide.