Consider the following statements.
1. Dragon Hole is the deepest known underwater sink hole in the world.
2. Epicentre of the great earthquakes are found in Abyssal plains.
3. Fathom means an imaginary line joining the points of equal salinity.
4. Salinity is maximum at the poles.

Consider the following statements.
1. Sylvia Earle is a famous American oceano-grapher
2. The continental shelves have extensive deposits of mineral fuels.
3. Submarine fans are located in continental slope.
4. Abyssal plains are otherwise called shallow sea plains

Consider the following statements.
1. There are four major processes involved in the water cycle.
2. The ground water gets collected below the earth's surface
3. The Northern hemisphere holds 81% of land
4. The ocean floor is flat

Marine resources  consists of_______resources.

Hawaii islands are located on the_____________ocean.

The amount of planktons to be found in the ocean is determined by
1. Depth of the water.
2. Ocean currents.
3. Temperature and Salinity.
4. Length of day and night.

Which of the following indicates the correct sequence of the topography beneath the surface of the sea?

Consider the following statements.
1. Most of the fishing grounds occur in areas where the continental shelf is wide.
2. Fishing is well developed in warm tropical waters.
3. Mixing of warm and cold currents facilitates plant nutrients for fish.
4. Inland fishing became significant in India.

Ocean currents are produced due to________

The Sunda Trench lies in the______ ocean.