Nature of Zoology

2. this is a combination of multiple different populations living together in a defined area
4. the normal or unchanged conditions in an experiment
5. are the smallest unit of life
9. the process scientists use to do science
11. the dependent variable is what you _____ in an experiment
13. this is a well tested explanation based in mathematical reasoning
16. is the most specific level of organization in ecology
17. only make up 1% of all animals, and they contain a spinal column

1. all animals contain these kinds of cells
3. this is the regulation of an organisms' internal environment
6. the variable that you change in an experiment
7. these studies are best suited for seeing real world implications on animals in their natural habitat
8. defined as the study of animals
10. the invention of this item allowed for scientists to further understand that all living things are made up of cells
12. this is the broadest level of ecological organization, encompassing all other levels
14. there is debate amongst the scientific community on whether or not this is living or nonliving
15. these types of cells are so old they're defined as being "Before Nucleus"