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.
The gizzard is the muscular stomach that seed-eating birds have. Food passing through the gizzard is broken down as the gizzardâs muscles contract. Grit (in the form of small stones, sand, or even eggshells consumed by birds) resides in the gizzard, helping to speed the food processing.