This book has been made to give to the non-specialized reader a general picture of the natural patrimony of Mexico and its roll as social, cultural and ecological center.Mexico have between the 10 or 12% of the earthbound diversity known, situation that requires the preservation of this environment, and some species, including its genetic variation.Mexicos natural richness con be also review trough the enormous potential that its natural resources have to improve the economical and social development under the sustainability principle.