What is primary succession
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Volcanic eruptions.

Retreat of glaciers.

Flooding accompanied by severe soil erosion.

Landslides.

Nuclear explosions.

Oil spills.

Abandonment of a manmade structure, such as a paved parking lot.

Explanation:Primary succession is ecological succession that begins in essentially lifeless areas, such as regions in which there is no soil or where the soil is incapable of sustaining life (because of recent lava flows, newly formed sand dunes, or rocks left from a retreating glacier).

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satellites are frequently used to make observations of the orbit on earth