can last or maintain itself over a long period of time

the process by which toxin accumulates in bodies of predators

removing predators from an ecosystem means an abundance of consumers and fewer producers

an organism that eats only plants

an organism that eats other animals

a consumer that eats both plants and animals

a process by which organisms convert sugar into usable energy

the process by which producers make food from water and carbon dioxide with light

the ability to do work