Predation predation being eaten by a predator animal

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ation sizes. Predation - predation (being eaten) by a predator animal (e.g. shark, hawk, etc) can regulate population sizes. Characteristics of populations • Resource limitation 121 Each pair of woodpeckers requires a tree hole to raise offspring. 121 If there are more holes than pairs, every pair gets a hole. If there are fewer holes than pairs, some pairs do not get a hole and do not reproduce. Ecology of ecosystem • Ecosystem more inclusive than a community Includes interactions with physical environment • How an organism acquires food Autotroph - creates food from inorganic sources I Heterotroph - eats other organic materials (living...
View Full Document

Ask a homework question - tutors are online