Tiny pollen grains are kept in water suspension. A strong light is directed in from the side. Viewed with a microscope, tiny points of light can be observed moving in an irregular, jittery way. What are the moving points of light?
- Apollen grains being hit by other pollen grains
- Bpollen grains being hit by water molecules
- Cwater molecules being hit by other water molecules
- Dwater molecules being hit by pollen grains