prerequisite definition, meaning, what is prerequisite: something that must exist or happen before something else can exist or happen: . Learn more.
Photos by J.D. Willson unless otherwise noted. Description: Brown snakes are small - 6-13 in. (17-33 cm) - snakes that are usually brown, but can be yellowish, reddish, or grayish-brown. They usually have two rows of dark spots, sometimes linked, along the back and a dark streak down the side of the head.The belly is light brown to white.A series of tiny black dots are often present along each side of the belly. The young have a yellowish collar going down the neck with a less evident dorsal pattern. This snake looks similar to earth snakes (Virginia sp.) but those species lack spots on the back and head.escription: Brown snakes are small - 6-13 in. (17-33 cm) - snakes that are usually brown, but can be yellowish, reddish, or grayish-brown.
Brown Tree Snake, Boiga irregularis, note the large eye with a vertical pupil. The Brown Tree Snake has a large head with eyes that are large and protruding with vertical pupils. The head is distinct from the narrow neck. They are brown above with ragged-edged, darker cross bands on the back and sides (eastern Australia). Northern Australian specimens are cream with bold reddish bands.