Geography

Mangroves cover_____ km2 of the earth’s surface ?

• 137000

• 105470

• 59780

• 163400

What are the benefits of mangroves ? (2 correct answers)

• Filter and break down pollution from land

• It’s leaves will often fall into the ocean and serves as a significant food source for certain breeds of fish

• Mangrove patches have become an area of tourism and provides around 1000 jobs each year

• Reduce energy waves that arrive from the shore

The artic ocean is in ______

• Northern Hemisphere and the Southern Ocean

• Northern Hemisphere and the Indian Ocean

• Southern Hemisphere and the White Sea

• Northern hemisphere and the poler sea

Some of the ice in the Arctic is believed to have existed for at least (a)   years

Sea ice grows and shrinks each year. In the Arctic it reaches its maximum extent in ____

• March

• January

• October

• July

_______perform nearly 50% of all photosynthesis

• phytoplankton

• Sphygmomanometer

• Thysymtopia

• mitsuha miyamizu

the ocean is vast and has an average depth of ______

• 3720m

• 4012m

• 3490

• 4939

88% of the ocean is deeper than (a)  

There are about____

different animal species in the ocean

• 10-15 million

• 9-13 million

• 15-20 million

• 1 billion

The

'reflectiveness' of a

surface is known as

its (a)