Before revision: Amazonian dark earths Amazonian Dark Earths (ADEs) or terra preta do índio (in Portuguese, means "black soil of the Indian" are a type of very dark, fertile artificial (anthropogenic) soil occurring in the Amazon Basin.
After revision: )Amazonian dark earths Amazonian Dark Earths (ADEs) or terra preta do índio (in Portuguese, means "black soil of the Indian" are a type of very dark, fertile artificial (anthropogenic) soil occurring in the Amazon Basin.