DESN 1010 Lecture Notes - Lecture 10: Ecological Pyramid, Autotroph, Herbivore
Document Summary
Decomposer- break down large particles into smaller ones (e. g earthworms or bacteria) Habitat- the place where an organism or species normally live. Niche- an organism"s biological characteristics including use of and interaction with abiotic and biotic resources in its environment (organism"s interaction with living and non living things for survival) Ecosystem- consists of biotic and abiotic factors to sustain living organisms. Trophic level- a level within a food chain or energy pyramid that demonstrates energy ow from producers (at the primary tropic level) to consumers (at secondary or tertiary trophic levels) Food chain- a sequence of linked organisms that feed on one another starting with a producer and continuing with consumers, energy ow decreases proportionally for each additional consumer level. Food web- an interconnection of many food chains. Heterotroph- organisms that feed on other organisms to obtain chemical energy. Extinct- there are no more of an organism found on earth anymore.
