Which of the following correctly compares the changes that take place in an ecosystem during primary succession and secondary succession? a] primary succession takes place over a long period of time in an area that has been disrupted by a natural disaster, while secondary succession occurs quickly on newly formed land.
b] primary succession takes place over a long period of time on newly formed land, while secondary succession occurs quickly in areas that have disrupted by a natural disaster.
c] primary succession takes place quickly on newly formed land, while secondary succession occurs over a long period of time in an area that has been disrupted by a natural disaster.
d] primary succession takes place quickly in an area that has been disrupted by a natural disaster, while secondary succession occurs over a long period of time on newly formed land.

B). Primary succession takes place over a long period of time on a newly formed land, while secondary succession occurs quickly in areas that have disrupted by a natural disaster.

Explanation:

A succession is a gradual change that occur within the biotic community due to change in the non-living environmental factors with respect to time until the community establish stability.

A primary succession occurs over a land which was not previously occupied by any living species. The land can be primitive, environmental factors like soil, air and others are not supportive initially. Thus, it takes long time to establish a biotic community.

A secondary succession occurs over a region which was previously inhabitated by colonies of species but disturbed due to natural calamity or human induced disaster. Some of the precursors of life can be found in such region like seeds, spores, roots and others which support new growth and the environmental factors are suitable to support re-establishment of living species. Hence, secondary succession takes place quickly as compared to primary succession.

Option B, Primary succession takes place over a long period of time on newly formed land, while secondary succession occurs quickly in areas that have disrupted by a natural disaster.

Explanation:

In primary succession, life originates on a new land where no life forms have ever existed earlier. It is just like green field origination of life.

While secondary succession is the process in which life originates on any land that earlier that some form of life but due to any calamity or natural disaster the entire life forms vanished with few reaming life traces that could lead to re-origination of life

Hence, option B is correct

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