We developed Natural Earth as a convenient resource for making custom maps. Unlike other map data intended for scientific analysis or military mapping, Natural Earth is designed to meet the needs of production cartographers using a variety of software applications. Maximum flexibility is a goal. Natural Earth Vector comes in ESRI shapefile format, the de facto standard for vector geodata.
A gizzard is a sack like organ at the back of the earthworms throat. The gizzard basically chews the earthworm's food since the worm doesn't have any teeth. The crop is a thin â¦ ner organ closer to the head. The crop stores food.
Excretory Organs 1. To locate the kidneys, move the stomach and the intestines to one side with the probe. Examine the posterior wall of the abdominal cavity to locate the two kidneys. The primary organs of the excretory system are the kidneys, which clean waste from the blood. These organs are large bean shaped structures located toward the back of the abdominal cavity on either side of the spine. Renal arteries