... and during some season or occasional year, otherwise, on the principle of geometrical increase, its numbers would quickly become so inordinately great that no country could support the product. A Primer of Darwinism and Organic Evolution - Page 58by Joseph Young Bergen, Fanny Dickerson Bergen - 1890 - 261 pagesFull view
- About this book
Charles Darwin - Science - 2007 - 328 pages
...convenience sake the general term of struggle for existence. A struggle for existence inevitably follows from the high rate at which all organic beings tend to...natural lifetime produces several eggs or seeds, must surfer destruction during some period of its life, and during some season or occasional year, otherwise,...