Which of the following biomes is most likely to show high actual ET?

The highest actual evapotranspiration (ET) is typically found in rainforests due to their warm temperatures and high availability of moisture. In rainforest biomes, dense vegetation, abundant rainfall, and consistent warm temperatures create ideal conditions for high levels of evaporation and transpiration processes. The continuous moisture supply allows water to be readily absorbed by plants and released into the atmosphere through transpiration.

In contrast, other biomes exhibit conditions that limit evapotranspiration. For example, tundra biomes have cold temperatures that slow down both evaporation and transpiration, despite having some moisture. Grasslands, while having moderate moisture availability, do not match the high levels of precipitation and warmth characteristic of rainforests. Deserts, although they experience high evaporation rates, typically have very low moisture availability, resulting in low actual ET despite the conditions that favor evaporation. Thus, rainforests stand out as the biome with the highest actual evapotranspiration due to their unique combination of temperature, moisture, and vegetation density.