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.
PHYLUM ARTHROPODA There are more species of arthropods than in all other animal phyla combined. Species occupy water, land, and air; they are herbivores, carnivores, and parasites. This vast array divides into three extant groups: chelicerates, crustaceans, and uniramians, and one extinct group, the trilobites.