A major disturbance that caused the ecosystem to completely collapse - Gizmo lab - people keep saying remove all the deceased but I don't get what that means :/

Look below.

Explanation:

Major disturbances that could cause an ecosystem to completely collapse could include habitat loss, human industrial growth, overpopulation, climate change, pollution, and invasive species entering the habitat.

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.