The lake near a small city has become polluted. one group blames the local factory for the pollution. the factory claims that non-point source pollution from the growing city population is to blame. which of these tests would not local citizens figure out if the pollution was from a point source or non-point source? a compare samples from different places around the lake. b observe the areas where water leaves the factory. c laboratory analysis to find out what pollutants are in the water. d examine the wildlife of the lake to see how it is affected by the pollution.

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.

emerging idea only occurs as a raw idea that could appear out of nowhere. meanwhile, to reach scientific consensus , that idea must be structured and tested over and over again through various experiments. the scientific consensus transforms the raw idea into idea that is more reliable through the process of scientific elimination.