Tiny pollen grains are floating in water. A bright light is directed from the side. When viewed with a microscope, little points of light can be seen 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