Final answer:
The terrestrial biome with abundant rainfall is the tropical rainforest, with rainfall ranging from 2,000 to 4,000 millimeters per year.
Step-by-step explanation:
The terrestrial biome with abundant rainfall is the tropical rainforest. Rainfall in tropical rainforests is abundant, with 2,000 to 4,000 millimeters (about 200 to 400 centimeters or 80 to 160 inches) of rain each year. This amount of precipitation supports high net primary productivity, leading to rapid plant growth. The richness in biodiversity, consistent warm temperatures, and abundant water supply contribute to the tropical rainforest's lushness. It is important to note that even during the driest months, the amount of rainfall in these forests can surpass the annual rainfall seen in some of the driest biomes, like deserts.