If an artificial hole is made in order to extract this water, it is known as an ___________.
A signal known as stimuli, causes an organism to react in a certain way. This reaction is known as:
Fill in the blanks with suitable words :
An acid is a compound which when dissolved in water forms hydronium ions as the only ________ ions.
A base is a compound which is soluble in water contains ________ ions. A base reacts with an acid to form a ________ and water only. This type of reaction is known as ________