Struggle for life most severe between individuals and varieties of the same species; often severe between species of the same genus. The relation of organism to organism the most important of all relations.
Kermadi Mouadcompartió una citael año pasado
little doubt about many slight changes, such as size from the amount of food,
nullcompartió una citahace 2 años
the first author who in modern times has treated it in a scientific spirit was Buffon