This printable crossword puzzle has 17 clues. Answers range from 5 to 13 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
What is the study of living organisms
The place in which and organism lives
All the population in an ecosystem
The rich variety of life on earth
A species that no longer exists
An individual form of life
A species is danger of becoming extinct
How an organism makes a living in a place
An increase in the earth's average temperature
A community of interacting organisms and their physical environment
A long period of sleep.
Chemicals or other harmful elements getting into the air, soil, and water
Strategies to reduce the use of natural resources
Removing trees to use the land or to use the wood for timber
An animal that eats other animals
An animal that eats plants/producer organisms
Illegal killing or taking of wildlife