What is a basic definition of darwinism?

Darwinism is a theory of biological evolution developed by the English naturalist Charles Darwin (1809–1882) and others, stating that all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual's ability to compete, survive, and reproduce.

Explanation:

answer; the region experienced a surplus of food;

answer; beware of exaggerated claims without supporting evidence;