One of these subsequent events is organogensis, which gastrulation makes possible by allowing the different germ layers to differentiate into major body tissues and form functioning organs. The germ layers that are established during gastrulation are the endoderm, mesoderm, and ectoderm.
Eilean Donan Castle is a medieval castle on the small island of Eilean Donan in Loch Duich in the western Highlands of Scotland.The island is dominated by its famous picturesque castle.ilean Donan Castle is a medieval castle on the small island of Eilean Donan in Loch Duich in the western Highlands of Scotland.
Belvoir Castle Facts. Belvoir Castle is a crusader castle in Israel built by the Knights Hospitaller around 1168 and occupied until 1219. Some form of castle already occupied the site before 1168, when it was sold to the Hospital of St John.rchitecture. The Belvoir Castle is built mostly from the same black basalt upon which it stands, with limestone employed as freestone as well as for much of the inner and upper parts of the inner ward. It consists of two almost square enceintes, one inside the other, both defended by projecting rectangular towers.