…………. is a cyclic resource.

Losing water vapour to the air by plants is called ……………

Forming tiny droplets and clouds by water vapour is called ……………

…………. % of total water on the earth is saline ocean water.

………….. % of the total amount of fresh water on the earth is in lakes, reservoirs and river systems.

Which ocean separates Asia and Oceania?

Which ocean separates America and Europe?

In which realm of the ocean are rock petroleum and natural gas found?

Chemical name of the common salt is

The average salinity of the oceans is ………