Answer: Equatorial regions
Notes: The rubber plant grows wild in the equatorial regions of the world which are marked by rainfall of around 250 cm evenly distributed without any marked dry season and with at least 100 rainy days per year; temperature range of about 20°C to 34°C with a monthly mean of 25°C to 28°C; and high atmospheric humidity of around 80%.The three largest producing countries, Thailand, Indonesia and Malaysia, together account for around 72% of all natural rubber production.
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