The term Environment of Evolutionary Adaptedness (sometimes abbreviated to EEA) is used to describe the environment or environments within which a given species evolved. In particular, it is used to describe the environments within which the human species[?] evolved.
References:
Foley, R.A. 1997. "The adaptive legacy of human evolution: A search for the environment of evolutionary adaptedness." Evolutionary Anthropology 4: 194—203.
... impressive Iguaçu[?] falls, the Rio Negro, São Francisco[?], Xingu, Madeira and the Tapajós[?] rivers.
Situated along the equator, Brazil's climate is predominantly ...