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.
Once the worms ingests their food it goes straight through their digestive tract which goes down the esophagus then through the crop and gizzard. The crop stores the food while the gizzard breaks it down to tinier pieces. The small pieces get digested afterwards. 8.) Your dissection of the earthworm did not go beyond segment 32.