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Sometimes insect dung, called frass, gets stuck to the insect after it defecates, so the grasshopper uses its long hind legs to brush it off

In behavioral science, there are competing theories about how reward responsiveness relates to drug use

Cumulative relative mass of PG aerosols deposited on the 1.1-m plate (70.6%) was significantly greater than PG/VG aerosols (50.2%) (Fig