Unit 1: The Living World - Ecosystems

The interactions between living and nonliving components

○ Some have well-defined boundaries, while others do not * The biotic and abiotic components of an ecosystem provide the boundaries that distinguish one ecosystem from another * Some ecosystems are very small * Each ecosystems interact with each other through the exchange of energy and matter

The region on our planet where life resides

Eats other organisms

Organisms eaten by other organisms

Living together; a close, long-term interaction between two species in an ecosystem

Both organisms benefit

One organism benefits, one organism neither benefits nor is harmed

One organism benefits and one is harmed

Organisms compete when they seek the same limited resource

Members of a different species compete for the same resource

Members of the same species compete for resources (ex: competing for mates)

Organisms that use the Sun to produce usable energy

The use of solar energy to convert carbon dioxide and water into glucose (form of potential energy) and oxygen

A process by which cells unlock the energy of chemical compounds

The opposite of photosynthesis, where oxygen and glucose are converted into energy, carbon dioxide, and water

Cells convert glucose into energy in the absence of oxygen; does not provide as much energy

Organisms incapable of photosynthesis who must obtain their energy by consuming other organisms

Consumers that eat producers

Consumers that eat other consumers

Carnivores that eat primary consumers

Carnivores that eat secondary consumers

The success of organisms consuming one another

The sequence of consumption from producers through tertiary consumers