Which region is characterized by heat as the dominant problem and an annual mean temperature not less than 20°C?

Which region is characterized by heat as the dominant problem and an annual mean temperature not less than 20°C?

• A. Polar climate
• B. Desert climate
• C. Tropical climate
• D. Temperate climate

Answer: (C)

Heat remains a constant condition in the tropical zone, with temperatures staying high throughout the year and little seasonal swing. The requirement of an annual mean temperature not less than 20°C aligns with this belt of the world where sun angle and daylight are steadier, so heat is the dominant condition shaping climate and life. Polar climates are defined by cold temperatures, so heat isn’t the main issue there. Desert climates emphasize dryness and water scarcity, so aridity—not heat alone—drives challenges, even though some deserts can be hot. Temperate climates have distinct seasons with cooler periods, so heat isn’t the year-round driver. So the region described is the tropical climate.

Heat remains a constant condition in the tropical zone, with temperatures staying high throughout the year and little seasonal swing. The requirement of an annual mean temperature not less than 20°C aligns with this belt of the world where sun angle and daylight are steadier, so heat is the dominant condition shaping climate and life.

Polar climates are defined by cold temperatures, so heat isn’t the main issue there. Desert climates emphasize dryness and water scarcity, so aridity—not heat alone—drives challenges, even though some deserts can be hot. Temperate climates have distinct seasons with cooler periods, so heat isn’t the year-round driver.

So the region described is the tropical climate.