is there a group country called g10,what's its porpouse?

Answer 1

Group of Ten (economic)
The current G10 member states are:

Belgium
Netherlands
Canada
Sweden
France
Switzerland
Germany
United Kingdom
Italy
United States
Japan

The Group of Ten or G10 refers to the group of countries that have agreed to participate in the General Arrangements to Borrow (GAB). The GAB was established in 1962, when the governments of eight International Monetary Fund (IMF) members—Belgium, Canada, France, Italy, Japan, the Netherlands, the United Kingdom, and the United States—and the central banks of two others, Germany and Sweden, agreed to make resources available to the IMF for drawings by participants, and, under certain circumstances, for drawings by nonparticipants. The GAB was strengthened in 1964 by the association of Switzerland, then a nonmember of the Fund, but the name of the G10 remained the same. The following international organizations are official observers of the activities of the G10: The Bank for International Settlements (BIS), European Commission, IMF, and OECD.

The Group of Ten signed the Smithsonian Agreement in December 1971, replacing the world's fixed exchange rate regime with a floating exchange rate regime.

Answer 2

Porpoises are small cetaceans of the family Phocoenidae; they are related to whales and dolphins. They are however distinct from dolphins, although the word "porpoise" is often used to refer to any small dolphin, especially in North America. A key difference is the shape of the teeth and of the head.

Since the G10 countries are so spread out, there are many porpoises that would habitat their area. Some species include the Harbour Porpoise and the Finless Porpoise.

If you were referring to just the G10 Countries - they are - Belgium, Canada, France, Germany, Italy, Japan, the Netherlands, Sweden, Switzerland, the United Kingdom and the United States