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what is the major factor that distinguishes primary from secondary succession?

a. the absence of soil

b. the presence of a pioneer species

c. the absence of a climax community

The answer is A. The absence of soil.

Explanation:

Primary and secondary succession are two types of ecological succession (succession of colonization of species in an ecosystem in a barren or destroyed habitat).

Primary Succession:

Primary succession is the the colonization of a barren area of land that is completely devoid of soil.

Secondary succession:

Secondary succession occurs in an area with ample soil but which has been destroyed by human intervention or natural disasters such as a wild fire or volcanic eruption.

A. the absence of soil

Explanation:

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common management practices in dairy and poultry farming are: (i) proper shelter facilities and their regular cleaning. (ii) some basic hygienic conditions such as clean water, nutritious food, etc. (iii) animals are kept in spacious, airy, and ventilated place.