Think about how acids and bases would affect the water quality in the two lakes.
Which set of pH data would you expect to see based on
your observations?
O Lake A: pH = 4.5; Lake B:pH = 7.5
O Lake A: pH = 8.3; Lake B: pH = 3.7
O Lake A: pH = 6.6; Lake B: pH = 6.8
Lake A: pH = 10.2; Lake B:pH = 1.7

3. Lake A: pH = 6.6; Lake B: pH = 6.8

Explanation:

Water quality has greatly affected by the presence of acid and base inside the water. The water is not good for health when its highly acidic or highly basic. If the pH of water is nearly neutral, this water is best for drinking purpose. In the option 3, both lake A and lake B has pH nearly neutral so this water causes no bad effect on the health of the human body. Highly acid water has low water quality due to the presence of metals which adversely affect our body.

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.

the answer is:

carbon dioxide