All living organisms such as fish,plants and animals need water to survive and also the require certain pH level of water in order to be healthy.Its a acid and base balance reaction.Strong acids dissolve into water and its changes water's pH.if water's pH level drops it becomes acidic suppose a fish waste ammonia releases and dissolves in water to form harmless ammonia ions,carbon dioxide ions and hydrogen ions even some limestone also rises pH level and water becomes more basic.To make the tank water alkaline, add some corals and aerate the tank water by fixing an air pump so that excess of carbon dioxide eliminate out and water pH level comes to neutral this is the reason water becomes slightly alkaline and the fishes are able to reproduce.
C. Anaphase Anaphase is the briefest stage of mitosis. The centromeres begin to separate, being pulled to the poles by the spindle fibers. As the centromeres seperate the chromatids split.
Sex is important because its how we reproduce we create new life so that they can create new life and so on with out sex theres no life if that makes sense
