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.
It became better known as the âMarshall Planâ after its chief promoter, Secretary of State George Marshall. Members of the government viewed the economic reconstruction of Europe as a matter of great urgency, for two reasons.he US scheduled a conference for July 1947 in Paris, to negotiate how much aid was needed to rebuild Europe and its economies. Delegates attended from sixteen European countries; the Soviet Union, Poland, Czechoslovakia and Hungary did not attend, the last three because of pressure from Moscow.