Which factor can cause secondary succession?

Disturbances like flood, fire and human activities.

Explanation:

Secondary succession is a type of ecological succession that occurs mainly on the preexisting soil. Secondary succession mainly occurs due to the natural and human disturbances in an already established ecosystem.

Flood can flow all the natural vegetation of the ecosystem and results in the death of living organisms of that ecosystem. Fire can burn the whole ecosystem and reduces the natural vegetation of that ecosystem. Human activities like deforestation can reduce the number of plants and animals of that ecosystem. Secondary succession reestablishes life in the previously destroyed ecosystem. This succession is much faster than primary succession.

the abdomen (less formally called the belly, stomach, tummy or midriff) constitutes the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. the region occupied by the abdomen is termed the abdominal cavity. the stomach secretes acid and enzymes that digest food. ridges of muscle tissue called rugae line the stomach. the stomach muscles contract periodically, churning food to enhance digestion. the pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.

preservation because he preserves part of the land and preserves means save

explanation: