Which of the following processes is faster?

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(B) Secondary succession is a process of ecological succession that occurs in areas where a previously existing community has been removed by a distur

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Secondary succession

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(B) Secondary succession is a process of ecological succession that occurs in areas where a previously existing community has been removed by a disturbance (e.g.,fire,flood,or deforestation) but the soil remains intact. Because the soil is already present and often contains a seed bank,the process of recolonization is much faster compared to primary succession,which starts on bare,lifeless rock where soil formation must occur first. Evolution is a very slow,long-term biological process. Therefore,secondary succession is the fastest among the given options.

List-$I$	List-$II$
$a$. Carbon dissolved in oceans	$i$. $55$ billion tons
$b$. Annual fixation of carbon through photosynthesis	$ii$. $71 \%$
$c$. $PAR$ captured by plants	$iii$. $4 \times 10^{13} \ kg$
$d$. Productivity of oceans	$iv$. $2$ to $10 \%$

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