Approximately ............. of the Earth's su | vedclass

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(A) The Earth's surface is covered by approximately $70 \%$ water,primarily in the form of oceans. Despite this vast area,the net primary productivity

Vedclass · Accepted Answer

$70 \%, 55$ billion tons

Vedclass · Answer

(A) The Earth's surface is covered by approximately $70 \%$ water,primarily in the form of oceans. Despite this vast area,the net primary productivity of the oceans is relatively low compared to terrestrial ecosystems. The total net primary productivity of the entire biosphere is approximately $170$ billion tons (dry weight) of organic matter. Out of this,the productivity of the oceans is only $55$ billion tons. Therefore,the correct statement is that $70 \%$ of the Earth's surface is covered by oceans,and their productivity is $55$ billion tons.

Approximately $.............$ of the Earth's surface is covered by oceans,yet the productivity of the oceans is only $...............$.

Similar Questions

The rate of formation of new organic matter by a rabbit in a grassland is called:

Which of the following ecosystems has the highest primary productivity?

............. of an ecosystem is the rate of production of organic matter during photosynthesis.

Why is the rate of assimilation of energy at the herbivore level called secondary productivity?

$A$: In secondary productivity,no new organic matter is formed.
$R$: It is only the utilisation of part of food manufactured by primary producers in the building of consumer biomass.

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