Across
- 3. microorganism that is not considered to be alive
- 4. a group of interacting individuals of one species
- 5. the smallest unit that is considered alive
- 7. variable that is changed or manipulated
- 9. groups of tissues that work together for a similar function
- 10. the first step of the scientific method
- 11. all life on Earth and the environments that support life
Down
- 1. groups of similar cells working together for a common function
- 2. an explanation of an observation that a scientist proposes
- 4. ineffective procedure that acts as a control
- 6. a widely accepted explanation supported by a large body of evidence
- 8. variable that is measured