Chapter 12 and 13 assessment
Data suggest that the average global temperature will increase by 2°C by the year 2030. If this occurs, a major concern for humans would most
likely be that-
o
the threat of extinction of land organisms will decrease.
the availability of salt water for agricultural use will increase.
O sea levels will rise enough to flood some coastal areas.
O
long-term stability of the climate will begefit ecosystems.

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.