The Sundarbans Mangroves eco-region on the coast forms the seaward fringe of the delta and is the world's largest mangrove ecosystem, with 20,400 square kilometres of area covered. The dominant mangrove species Heritiera fomes is locally known as sundri or Sundari.

Correct Option: C

The Sundarbans Mangroves eco-region on the coast forms the seaward fringe of the delta and is the world's largest mangrove ecosystem, with 20,400 square kilometres of area covered. The dominant mangrove species Heritiera fomes is locally known as sundri or Sundari.

The Serengeti National Park is a large national park in Serengeti area, Tanzania. It is most famous for its annual migration of over one and a half million white bearded (or brindled) wildebeest and 250,000 zebra and its many crocodiles. Serengeti National Park is widely regarded as the best wildlife reserve in Africa due to its density of predators and prey.

Correct Option: B

The Serengeti National Park is a large national park in Serengeti area, Tanzania. It is most famous for its annual migration of over one and a half million white bearded (or brindled) wildebeest and 250,000 zebra and its many crocodiles. Serengeti National Park is widely regarded as the best wildlife reserve in Africa due to its density of predators and prey.

The Equator crosses/ passes through seven countries in Africa: the Democratic Republic of Sao Tome and Principe (off the coast of mainland Africa); Gabon; Congo-Brazzaville; Democratic Republic of Congo; Uganda; Kenya and Somalia.

Correct Option: A

The Equator crosses/ passes through seven countries in Africa: the Democratic Republic of Sao Tome and Principe (off the coast of mainland Africa); Gabon; Congo-Brazzaville; Democratic Republic of Congo; Uganda; Kenya and Somalia.

Mont Blanc, meaning "White Mountain", is the highest mountain in the Alps, Western Europe, and the European Union. The Mont Blanc massif is being put forward as a potential World Heritage Site because of its uniqueness and its cultural importance, considered the birthplace and symbol of modern mountaineering.

Correct Option: D

Mont Blanc, meaning "White Mountain", is the highest mountain in the Alps, Western Europe, and the European Union. The Mont Blanc massif is being put forward as a potential World Heritage Site because of its uniqueness and its cultural importance, considered the birthplace and symbol of modern mountaineering.

The major fishing grounds of the world are found in those regions where the warm oceanic currents meet the cold currents. The mixing of these waters and the shape of the ocean bottom lifts nutrients to the surface. They are rich in planktons on which fish feed.

Correct Option: B

The major fishing grounds of the world are found in those regions where the warm oceanic currents meet the cold currents. The mixing of these waters and the shape of the ocean bottom lifts nutrients to the surface. They are rich in planktons on which fish feed.