This printable crossword puzzle has 20 clues. Answers range from 5 to 13 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
A non-living chemical or physical part of an ecosystem that effects living organisms
An organism that is able to make nutritional organic substances
The variety of life in the world or in particular habitats
A large naturally occurring community of that is occupying a habitat
living organisms in an ecosystem
The regions of the surface Atmosphere
An animal that feeds on flesh
An animal that feeds on both plants and animals
An animal that feeds on only plants
A group of living things in the same place or having a similar characteristic
An animal that eats s living organisms to get energy
When something is living off another and is neither benefited or harmed
When two different species associate and both benefit from it
When a species lives off of one and is harmed or killed
A plant that is food to an animal or person
An organism that breaks down a dead organism
An animal that feeds on the flesh of a dead animal
The study of inheritant and organisms and their enviornment
A natural home or environment of n animal, plant, or other organisms
An item or organism needed for a certain animal to survive