Tiny pollen grains are held in water, and a bright light is directed from the side. When the mixture is viewed under a microscope, little points of light are observed moving in a random, jerky way. What are these 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