Discourage the dog from barking during the day and night by always ignoring barks; reward the dog with play and attention when the dog is not barking, and ignore the dog when it is barking. Positive reinforcement will help the dog to learn that barking, during the day or night, does not result in a reward.
The green pigment chlorophyll chlorophyll, green pigment that gives most plants their color and enables them to carry on the process of photosynthesis. Chemically, chlorophyll has several similar forms, each containing a complex ring structure and a long hydrocarbon tail......
Pigments absorb light used in photosynthesis. In photosynthesis, the sunâs energy is converted to chemical energy by photosynthetic organisms. However, the various wavelengths in sunlight are not all used equally in photosynthesis.