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(B) Phosphorus is a key biogenetic element that is primarily found in the Earth's crust within crystalline rocks,specifically in the form of phosphate

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Phosphorus

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(B) Phosphorus is a key biogenetic element that is primarily found in the Earth's crust within crystalline rocks,specifically in the form of phosphate minerals like apatite.As these rocks undergo weathering,phosphorus is released into the soil,making it available for uptake by plants and subsequent entry into the food chain.Unlike carbon or nitrogen,phosphorus does not have a significant gaseous phase in its cycle,making the weathering of rocks its primary natural source.

Trophic levels	Examples
$A$. First	$a$. Man
$B$. Second	$b$. Wolf
$C$. Third	$c$. Cow
$D$. Fourth	$d$. Phytoplankton

Crystalline rocks are a natural source of which biogenetic element?

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Trophic levels Examples

$A$. First $a$. Man

$B$. Second $b$. Wolf

$C$. Third $c$. Cow

$D$. Fourth $d$. Phytoplankton

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Distinguish between:
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