What causes the rainforest land is poor for farming?

One reason the rain forest soil is poor is that most of the nutrients are stored in the plants themselves. In any forest, dead organic matter falls to the ground, providing valuable nutrients for new growth. In cooler or drier climates, the nutrients build up in the soil.

Explanation:

heat from the core of the earth causes convection currents to occur in the mantle. these currents slowly move the crust around.

d. loss of habitat and farmland