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Hogg, C

Tadpoles have a natural tendency to avoid dark moving dots, and the researchers exploited this by putting some tadpoles into a Petri dish, showing them dark dots under various lighting conditions, while using specially designed video-tracking software to track the movements of the tadpoles and the dots, and to measure the tadpoles avoidance responses

doi:10.1663/0013-0001(2003)057[0295:AEFTTO]2.0.CO;2

It's a fun movie to get you in the mood for the New Year

The absolute best cleaning product for this use is Trisodium Phosphate or TSP

Western Herbs There is a significant variation in blends based on their origin