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Why are oceans least productive?...

Why are oceans least productive?

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Oceans are least productive because
(i) There is insufficient radiation as sunlight decreases with the increasing depth of the ocean.
(ii) Oceans are nitrogen deficient which is an important nutrient for plants.
(iii) Conditions oi high salinity which is not iavourable for all plants.
(iv) there is no substratum to support plants.
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  2. Is the common edible mushroom an autotroph or a heterotroph?

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  3. Why are oceans least productive?

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  4. Why is the rate of assimilation of energy at the herbivore level calle...

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  5. Why are nutrient cycles in nature called biogeochemical cycles?

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  6. Give any two examples of xerarch succession.

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  7. Define self sustainability

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  11. The number of trophic levels in an ecosystem are limited. Comment.

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  12. Is an aquarium a complete ecosystem?

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