How can overgrazing affect regeneration of natural vegetation?

Correct answer: It can stop the growth of new plants

The direct answer is C: overgrazing can stop the growth of new plants. Regeneration means the natural replacement of old plants by seeds, seedlings, and young shoots. When too many animals graze in one area, they eat tender leaves and seedlings before these young plants become strong. Trampling by animals can also damage roots, compact the soil, and reduce the space in which seeds can germinate. Step by step: too many animals eat young growth; fewer seedlings survive; fewer plants grow into mature vegetation; therefore natural regeneration becomes weak. Option A is wrong because grazing does not immediately turn every plant into a tree. Option B is wrong because overgrazing generally damages soil and may reduce fertility rather than make all soil fertile. Option C is correct because it describes the main effect on seedlings. Option D is wrong because environmental damage makes conservation more necessary, not unnecessary. Memory cue: excessive use usually harms renewal.