22Animals that scavenge in and around human localities need to utilize a broad range of 23 resources. Preference for any one kind of food, under such circumstances, might be 24 inefficient. Indian free-ranging dogs, Canis lupus familiaris are scavengers that are heavily 25 dependent on humans for sustaining their omnivorous diet. The current study suggests that 26 because of evolutionary load, these dogs, which are descendents of the decidedly carnivorous 27 gray wolf, still retain a preference for meat though they live on carbohydrate-rich resources. 28The plasticity in their diet probably fosters efficient scavenging in a competitive 29 environment, while a thumb rule for preferentially acquiring specific nutrients enables them 30 to sequester proteins from the carbohydrate-rich environment. 31 32

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Graphitic carbon nitride (g-C3N4) has been proposed as a promising two-dimensional semiconducting materials and has shown the various applications in the field of photocatalyst due to its thermally stable and...

Main observation and conclusion Photoredox C—H bond formation can proceed in aerobic environment under solar light and has therefore become attractive. Nowadays, different types of expensive novel metal complexes and nanomaterials have been urbanized as photocatalysts for direct C—H bond formation in between derivatives of heteroarenes (HAs) and aryl diazonium salts. These photocatalysts, however, still suffer from poor stability, high cost, and decay. Herein, a graphitic carbon nitride‐based fluorescein isothiocyanate (g‐C3N4–FITC) film photocatalyst has been reported, which shows excellent light harvesting ability, and band gap suitability to catalyze the metal free direct C—H arylation of HAs under solar light at ambient temperature. Moreover, the g‐C3N4–FITC film photocatalyst can be reused four times without significant loss of activity, confirming the excellent photocatalytic stability. The current strategy to construct a g‐C3N4–FITC film photocatalyst for direct C—H arylation opens a new path towards replacing metal‐based catalysts in fine chemical synthesis.