All organisms contain require it to survive

Carbon

Explanation:

Carbon is one of the fundamental element that is present in organic compounds. The presence of carbon helps in the creation of a stable type of bond when combines with different elements. Two carbons can also form a bond by reacting with each other. So, it can create a larger and complex form of molecules. These compounds containing carbon are important as it carries out the various life-supporting processes.  

This is why Carbon is very essential for the existence of life.

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i have found an answer to your question but use it as information.

information: because weak acids/bases have low concentration of hydrogen ions, the addition of water has a large impact on the ph. 2. a difference in 1 unit is a 10x difference in concentration for example; a liquid with ph of 3 is 10x more acidic than a liquid with a ph of 4. therefore, a liquid with a ph of 3 is stronger.

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