Giraffes have long necks, which they use to browse the leaves of trees. They also have slightly elongated forelegs, about 10% longer than their hind legs. Like nearly all mammals, a giraffe has seven neck vertebrae, which are extremely. elongated.
A crustacean is an organism that belongs to the Kingdom Animalia, Phylum Arthropoda, and in the class Crustacea. Examples of the organisms belonging to this class are lobsters, woodlice, krill, shrimp, barnacles, crayfish, and crabs.
subÂ·strate. 1. The material or substance on which an enzyme acts. See Note at enzyme. 2. The surface on which plants, algae, or certain animals, such as barnacles, live or grow. A substrate may serve as a source of food for an organism or simply provide support. - The surface on which an organism lives or moves.. The surface on which plants, algae, or certain animals, such as barnacles, live or grow. A substrate may serve as a source of food for an organism or simply provide support.