Across
- 2. A force caused by the pull of gravity.
- 4. Jelly-like fluid contained within a cell.
- 5. The movement of particles from high to low areas of concentration.
- 8. Counteracts the force of gravity.
- 9. How tightly packed something is.
Down
- 1. Converts sunlight in to sugars.
- 3. The amount of matter in an object.
- 6. The resistance caused by the motion of an object relative to another.
- 7. A natural force pulling objects to Earth.
- 10. Unicellular or single-celled organisms with plant and animal features.