Tiny pollen grains are dispersed in water. A strong beam of light is directed from the side. Viewed under a microscope, tiny points of light are observed moving in an irregular, jerky 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