Because there is a huge variety of orgainisms,in the soil of the rainforest.
Soils are thin and poor in hot wet climates because of the erosion of the loose surface soils.
It depends on the region. Northern Mexico is overwhelmingly dominated by the Sonoran and Chihuahuan deserts, so soil samples would be compact, sandy and dry. The central Mexican Plateau is of volcanic origin, so soils are quite fertile, made of topsoil and black dirt. Southeastern Mexico is home to several rainforests, which have poor topsoils made mostly of limestone.
Frequent rain causes the soil in former rain forests to deplete so quickly after they are used for farming.
Tropical rainforest
glacial deposits.
Leanching
yes, this is true
Pitcher plants get their nutrients mainly from the insects that they trap. So they don't need to depend on the soil for nutrients.
Because the soils are generally nutrient poor
Rain forest or biome or soil
no because the types of soils it contains. If you look up for EX: Tropical Rainforest in the Google search bar then there is only going to be tropical rainforest in certain areas same for the Rainforest.
The desert had poor soil because the water was sipped. If soil becomes too dry to support life, then it loses that source of organic material. Ecosystems that depend on soil also enrich the soil.