The main determinant of climate in a biome is its latitude, which impacts temperature and precipitation patterns. Other significant factors include elevation, geography, and prevailing winds. Latitude determines the amount of solar energy received, influencing the biome's overall climate. For instance, tropical biomes near the equator experience warm temperatures and high rainfall, while polar regions are characterized by cold temperatures and low precipitation. Understanding these determinants is essential for predicting how ecosystems respond to climate change.