a group of organisms that can interbreed and produce fertile offsprings

a environment of an animal, plant, or etc. organisms

a specific living area where how many people or animals, and organisms

people or animals living in a same area have something in common

in a community where biological organisms interact within their environment

relation of organisms with another organisms in their surroundings

be able to form nutritional organic substances from inorganic substances  

an organism that need nutritional requirements from complex substances 

that uses or eat from another organisms

to produce food for other organisms

a animal that feeds on dead organic material

an organism that feeds on decay organic matter 

comparing each organisms if they share the same nutritional relationship and source of energy 

a series of organism depends to eat or consume the next source of food 

a system where they interlock the food chains

a plot where in ecology and geography to isolate the area of study of an item over that area

relating the a statictical method 

any outdoor experiment where examine the natural environment under control conditions