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......
# Biological pigments, also known simply as pigments or biochromes are substances produced by living organisms that have a color resulting from selective color absorption. Biological pigments include plant pigments and flower pigments. ... en.wikipedia.org/wiki/Pigments_(biolog... Examples: Chlorophyll is the green pigment in plant leaves and stems. Anthocyanin is the pigment that gives strawberries and blood oranges their red color. Carotene makes carrots and sweet potatoes orange. Pigments are what determine the color of an object (or to be scientifically correct, what color is reflected). The primary pigments are cyan, yellow, and magenta. Not to be confused with the primary colors of light: red, green, and blue.