Why Is An Earthworm Called An Invertebrate?
Why Is An Earthworm Called An Invertebrate? Earthworm is an invertebrate because it does not posses a notochord Why is an earthworm an invertebrate? Earthworms have no lungs, and absorb oxygen directly through their skin. In order to do this, they must stay moist, and do so by lubricating their skin with glands along their