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.
Birds. Many birds are herbivores or omnivores, but some species of birds, especially raptors like hawks, eagles, falcons and vultures, are carnivores. Raptors will kill prey like small animals and fish but also are scavengers and feed off the carcasses of larger animals too big to be their prey.erbivores eat only plants. Zebras, buffaloes, gorillas and horses are examples of herbivores. Omnivores such as ravens, squirrels and human beings eat both plants and animals. Carnivores eat meat only. Carnivores sit at the top of the food chain and have adapted digestive tracts that can only process meat.