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In addition to re-writing the classification of annelids and 3 previously independent phyla, the molecular phylogenetics analyses undermine the emphasis that decades of previous writings placed on the importance of segmentation in the classification of invertebrates. Polychaetes, which these analyses found to be the parent group, have completely segmented bodies, while polychaetes' echiurans and sipunculan offshoots are not segmented and pogonophores are segmented only in the rear parts of their bodies. It now seems that segmentation can appear and disappear much more easily in the course of evolution than was previously thought. The 2007 study also noted that the ladder-like nervous system, which is associated with segmentation, is less universal previously thought in both annelids and arthropods.[n 2]
What offshoots of polychaetes are unsegmented?
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The answer: echiurans and sipunculan

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Britain now threatened to withdraw its subsidies if Prussia didn't consider offering concessions to secure peace. As the Prussian armies had dwindled to just 60,000 men and with Berlin itself under siege, Frederick's survival was severely threatened. Then on 5 January 1762 the Russian Empress Elizabeth died. Her Prussophile successor, Peter III, at once recalled Russian armies from Berlin (see: the Treaty of Saint Petersburg (1762)) and mediated Frederick's truce with Sweden. He also placed a corps of his own troops under Frederick's command This turn of events has become known as the Miracle of the House of Brandenburg. Frederick was then able to muster a larger army of 120,000 men and concentrate it against Austria. He drove them from much of Saxony, while his brother Henry won a victory in Silesia in the Battle of Freiberg (29 October 1762). At the same time, his Brunswick allies captured the key town of Gottingen and compounded this by taking Cassel.
How many troops did Frederick have left?
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The answer: 60,000 men

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Since 2005, Iran's nuclear program has become the subject of contention with the international community following earlier quotes of Iranian leadership favoring the use of an atomic bomb against Iran's enemies and in particular Israel. Many countries have expressed concern that Iran's nuclear program could divert civilian nuclear technology into a weapons program. This has led the UN Security Council to impose sanctions against Iran which had further isolated Iran politically and economically from the rest of the global community. In 2009, the US Director of National Intelligence said that Iran, if choosing to, would not be able to develop a nuclear weapon until 2013.
Iran's nuclear program has caused discord within the international community since when?
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The answer: Since 2005

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Cetaceans were historically abundant around the island as commercial hunts on the island was operating until 1956. Today, numbers of larger whales have disappeared, but even today many species such humpback whale, minke whale, sei whale, and dolphins can be observed close to shores, and scientific surveys have been conducted regularly. Southern right whales were once regular migrants to the Norfolk hence naming the island as the "Middle ground" by whalers, but had been severely depleted by historical hunts, and further by illegal Soviet and Japan whaling, resulting in none of very few, if remnants still live, right whales in these regions along with Lord Howe Island.
What other species can be seen close to the shores of Norfolk Island?
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The answer:
dolphins