Sulci are small grooves, but there are also large grooves, and these are called fissures. Fissures divide the cerebral cortex into lobes and also divide the cerebrum into the right and left cerebral hemispheres along the saggital plane.
The ducks predator is the pelican,and,wolf, foxes, raccoons, snakes, sharks, weasels, hawks, owls, eagles, cats, dogs, rats, large fish (especially for ducklings), turtles, co â¦ yotes, Tasmanian devils, seals, killer whales, mountain lions, badgers, falcons, shoebills, storks, herons, and wolverines. duck is both predator and prey. A duck eats living organisms such as small fishes (not to mention insects and grasses), which makes it a predator.
Many ducks also eat gravel, small stones or sand. While these items do not provide any nutritional value for ducks, gravel, stones, and sand actually help ducks digest their food better. The rough texture helps break down the duck's food.ome of the plants that ducks eat are grass, weeds, algae, seeds, grain, berries, fruit and aquatic plants. Some of the animals that ducks eat are snails, mollusks, worms, frogs, salamanders, small fish and fish eggs. Ducks also eat insects. One species of duck called the Merganser, eats mostly fish.