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i) Considerable amount of phosphorus from the soil rock is washed into the sea by rains and floods (an estimated amount of 2 million tonnes of phosphotic rock is lost to sea) where sea weeds take up phosphorus and is then passed onto fishes and sea birds.
ii) Terrestrial plants absorb phosphorus as phosphate ions (orthophosphate ions) from the soil.
iii) Animals obtain phosphates by consuming plants as food (as organic phosphate through the food chain).
francis1897 answered the question on February 27, 2023 at 08:58
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