The sponges are an ancient group with a fossil record back as far as the Precambrian. There are about 10,000 known species of marine sponges, and about 150 freshwater sponges. They are relatively abundant in all marine waters at all depths. They vary in size from a few millimetres to over two metres across.
Operation Overlord was the code-name given to the Allied invasion of France scheduled for June 1944.The overall commander of Operation Overlord was General Dwight Eisenhower.ecurity for the plan had to be total. The fact that the Germans were taken by surprise at Normandy indicates that the Allies were successful in this. The first issue that the Allies had to decide on was where to land in France. The Pays de Calais was an obvious choice as it was the nearest part of France to Britain.
The term D-Day is generally used to refer to the Allied invasion of France on June 6, 1944. The term itself actually refers to any date established for the start of specific â¦ military action.During World War 2, the British Army had fought along side the French, Dutch, and Belgian armies in 1940.he D-Day Normandy Invasion's success was the ultimate KEY to the Allies's victory against Nazi, Germany. The Normandy Landing's success was vital because it spearhead â¦ ed the Western Front in Europe. This played the most sigificant role in the War in Europe. There is your final answer.