Not eating nutritious foods, getting sick and having a VERY VERY high temperature for a long time, being very dehydrated, drinking A LOT OF WATER and not going to the bathroom (screws up your electrolytes also).
no. water just dilutes the acid but the PH will not change unless an acid or alkali is added
pollutions, chemicals
The pH level will start to change
Ph level of sugar is 5.5
It depends on the chemical composition of the salt. If it is acidic or basic it will change the pH. The common salt (NaCl) is neutral in nature so it doesn't change the pH.
Yes, more alkaline
No
Nylon is a polymer insoluble in water so it can not change the pH value of water which is 7.
Buffers "slow" changes in pH (they make it difficult to change pH), and for animals a constant pH (internally) is critical to survival. (A change in pH of 1 - in either direction - will kill you.)
Yes it raises ph over time depending on its enviroments
Apples have a pH level of 3. Also, soda has a pH level of 4, and vinegar's pH level is 2.5.
they change colour on reaction to soil pH