Making the world better, one answer at a time. The primary germ layers (endoderm, mesoderm, and ectoderm) are formed and organized in their proper locations during gastrulation. Endoderm, the most internal germ layer, forms the lining of the gut and other internal organs. Ectoderm, the most exterior germ layer, forms skin, brain, the nervous system, and other external tissues. Mesoderm, the the middle germ layer, forms muscle, the skeletal system, and the circulatory system.
Eiffel Tower. The Eiffel Tower, located in Champ de Mars in Paris, is a tall wrought-iron structure made by man. It is one of the most famous monuments of the world. It is the most famous landmark of Europe, held the record as the tallest man-made structure of the world from 1889 to 1930 with its height of 324 meters.
â¢ EIFFEL TOWER (noun). The noun EIFFEL TOWER has 1 sense: 1. a wrought iron tower 300 meters high that was constructed in Paris in 1889; for many years it was the tallest man-made structure. Familiarity information: EIFFEL TOWER used as a noun is very rare.Dictionary entry details. EIFFEL TOWER (noun). The noun EIFFEL TOWER has 1 sense: 1. a wrought iron tower 300 meters high that was constructed in Paris in 1889; for many years it was the tallest man-made structure. Familiarity information: EIFFEL TOWER used as a noun is very rare.