Ch. 3 and 4 Biology Vocab

Chapter 3 and 4 Vocabulary

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Ecology
The scientific study of interactions among organisms and between organisms and their environment, or surroundings.
Biosphere
Combined portions of the planet in which all of life exists, including land, water, and air, or atmosphere
Species
Group of organisms so similar to one another that they can breed and produce fertile offspring
Population
Groups of individuals that belong to the same species and live in the same area
Community
Assemblages of different populations that live together in a defined area
Ecosystem
Collection of all the organisms that live in a particular place, together with their non living, or physical, environment
Biome
Group of ecosystems that have the same climate and similar dominant communities
Herbivore
Organisms that eat only plants
Carnivore
Organisms that eat only animals
Omnivore
Organisms that eat both plant and animals
Decomposer
Heterotrophs that breaks down organic matter
Food chain
A series of steps in which organisms transfer energy by eating and being eaten
Food web
A link that connects all the food chains in the ecosystem together
Biomass
The total amount of living tissue within a given trophic level
Evaporation
Process by which water changes from liquid form to an atmospheric gas