Review Puzzle

2. collection of tissues
4. living factors of an environment
5. community of plants and animals in a certain climate
7. a molecule containing a very large number of atoms
8. collection of all ecosystems
11. new offspring is made by two parents contributing genes
12. non-living factors of an environment
16. smallest unit of structure in a living organism
18. the passing on of traits from parents to their offspring
19. new offspring is made by a single parent
20. state of steady internal, physical, chemical, and social conditions maintained by living things
21. group of similar cells
22. smallest and most fundamental unit of matter
24. how organisms adjust to new environments or to changes in their current environment
25. small structure existing within a cell
26. all the living things in an area together with the nonliving things

1. individual living entities
3. sum of populations living in an area
6. study of interactions among organisms and between organisms and their environment
9. made up of one cell
10. chemical structure consisting of at least two atoms held together by chemical bonds
13. made up of many cells
14. all the individuals of a species living within a specific area
15. biological system consisting of a group of organs that work together
17. organisms that can't make their own food
19. organisms that can make it's own food
23. the chemical reactions in the body's cells that change food into energy