Question

6 Explain How PH change in the lake water
can endanger the life of aquatic animal (like
fish), what can be done to learen in the
danger to the life aquatic animal in the
lake ?​

Answer 1

Explanation:

The pH of lake water becomes lower because of too much acid rain. The high acidity of lake water can kill the aquatic animals like fish since they can survive within a narrow range of pH change. Calcium carbonate is added to acidic lake water to neutralise the acid and this prevents the fish from being killed.

Answer 2

Answer:

a) Lower pH in the mouth creates an optimal environment for bad bacteria, which eventually causes tooth decay. The pH of your mouth can change depending on what foods you are eating. The basic compound in tooth enamel, calcium phosphate, is attacked by acids and cause the decay of tooth. So to prevent it, the effect has to be neutralized.

b) Water is a neutral element. Aquatic animals cannot bear too much of basic or too much acidic behaviours. So to lessen the danger we can make the lake water neutral by adding acid to it if the water is too basic and vice versa.