If this is your first pregnancy, you may not feel your baby move until closer to 25 weeks. By the second pregnancy, some women start to feel movements as early as 13 weeks.
exists and is an alternate of. Merge this question into. Split and merge into it. Answer by Mayra03. Confidence votes 145. A landslide or volcanic eruption is a kind of primary disturbance. It causes a very drastic and sudden change in the landscape.ecomposition is not a disturbance of the ecosystem. This is because it is a natural process in harmony with the ecosystem rather than an outside force is interfering.
Answers. Best Answer: Secondary succession refers to the regrowth of a habitat in the area where a disruptive event has occurred and eliminated the existing, above ground plant life of the natural habitat. The disruptive event may be a forest fire, tree harvesting or a hurricane. The disruptive event causes only the plant life above ground to stop growing. Underground plants and seeds that have not sprouted above the ground's surface are often preserved. These seeds and plants begin the secondary succession.