In the Köppen climate system, which sub-type is denoted by "Af"?
Q1. In the Köppen climate system, which sub-type is denoted by "Af"?
Answer: Tropical rainforest
Explanation: Af denotes a tropical rainforest climate in the Köppen system, characterized by high temperatures (above 18°C year-round) and heavy rainfall exceeding 60 mm in every month. Such climates are found in the Amazon Basin, Congo Basin, and Southeast Asian archipelago.