The Producer Price Index (PPI) program measures the average change over time in the selling prices received by domestic producers for their output. The prices included in the PPI are from the first commercial transaction for many products and some services.
Amphipods can thrive in marine settings and on moist land. Other species are found in home gardens and beneath flowerpots. Some amphipods are herbivores, while others are carnivores. Sand-, mud-and moist-soil-dwelling amphipods feed on bacteria.Other species are scavengers that feed on dead plants and animals.ehavior, Diet & Habits. All amphipod species prefer moist habitats. Amphipods that live in water are primarily white, although some may also exhibit light brown, green, dark brown or black coloration. Most amphipods become red in color when they die.
1 Stomach acidity. 2  Carnivoresâ stomachs are 20x more acidic than the stomachs of herbivores. 3  Human stomach acidity matches that of herbivores. 4  Saliva. 5  The saliva of carnivores is acidic. 6  The saliva of herbivores is alkaline, which helps pre-digest plant foods. 7  Human saliva is alkaline. Carnivorous animals have intestinal tracts that are 3-6x their body length, while herbivores have intestinal tracts 10-12x their body length. 2  Human beings have the same intestinal tract ratio as herbivores.