Question

the nutrient levels in rainforest soils are concentrated at the surface of the soil. because of this, what happens once rainforests are cleared? the soils are nutrient rich for many generations the soils deteriorate quickly

Explanation:

Rainforest soils have nutrients concentrated at the surface. When rainforests are cleared, there are no trees to replenish nutrients. Surface nutrients can be easily washed away (leached) by heavy rainforest rainfall. Without continuous input from the forest ecosystem (like leaf litter decomposition), the soil, which relied on that surface - level nutrient concentration, loses its fertility.

Answer:

The soils deteriorate quickly