All of the above are correct.
Bio magnification stands for Biological Magnification, which means the increase of contaminated substances or toxic chemicals that take place in the food chains. These substances often arise from intoxicated or contaminated environments.
Pollutant needs to satisfy characteristics like long life, biologically active, soluble in fat etc. to make bio magnification possible.

Both the statements are incorrect.
Created in 1988 by the World Meteorological Organization (WMO) and the United Nations Environment Programme (UNEP), the objective of the IPCC is to provide governments at all levels with scientific information that they can use to develop climate policies. IPCC reports are also a key input into international climate change negotiations.
The IPCC is an organization of governments that are members of the United Nations or WMO. The IPCC currently has 195 members. Thousands of people from all over the world contribute to the work of the IPCC. The IPCC does not conduct its own research.

Siachen Glacier, one of the world’s longest mountain glaciers, lying in the Karakoram Range system of Kashmir near the India– Pakistan border, extending for 44 mi (70 km) from north-northwest to south-southeast. It has a number of fast-flowing surface streams and at least 12 medial moraines. It is the source for the 50-mi-long Nubra River, a tributary of the Shyok, which is part of the Indus River system.

Both the statements are correct.
The International Criminal Court (ICC), located in The Hague, is the court of last resort for prosecution of genocide, war crimes, and crimes against humanity. It does not have the capacity to arrest suspects and depends on member states for their cooperation.
The International Court of Justice, also known as the World Court, is the main judicial organ of the UN.

The seven G7 countries are Canada, France, Germany, Italy, Japan, the UK and the USA.