organisms that make their own food
animals that feed on producers; ex. herbivores
an organism that eats primary consumers
an organism that eats only plants.
organisms that mainly prey upon animals.
an organism that eats both plants and animals.
any animal that feeds on refuse and other decaying organic matter
organism that breaks down and obtains energy from dead organic matter
a series of steps in which organisms transfer energy by eating and being eaten
way of showing how food chains are related
way of showing how energy moves through a food chain
group of ecosystems that have the same climate and dominant communities
Gradual change in organisms that occurs when the environment changes
an ecological succession that begins in a an area where no biotic community previously existed
succession on a site where an existing community has been disrupted
a stable, mature community that undergoes little or no change in species over time
first species to populate an area during primary succession