Front

The first recorded circumnavigation of Africa was made by the ____________.

Back

Phoenicians, Greeks, Chinese, Polynesians.

Front

Which of the following is the highest taxonomic classification of an organism?

Back

Kingdom.

Front

The land area that supplies water to a river system is called.

Back

Watershed.

Front

Which ocean is the smallest and shallowest?

Back

Arctic.

Front

The process by which energy is derived from solar radiation that is used by certain organisms to form organic matter is called _______.

Back

Photosynthesis.

Front

What is the primary driver of ocean currents?

Back

Wind.

Front

Define 'salinity' in the context of oceanography.

Back

The concentration of salts in water.

Front

What is the significance of the thermocline in ocean waters?

Back

It is the layer where temperature changes rapidly with depth.

Front

What is the main cause of tides in the ocean?

Back

The gravitational pull of the moon and the sun.

Front

What is the difference between 'upwelling' and 'downwelling'?

Back

Upwelling brings nutrient-rich water to the surface, while downwelling pushes surface water down.