The salivation of dogs in pavlov’s experiments was significant because it

The salivation was significant because it demonstrated the ability to learn to anticipate future events as a survival advantage.

Explanation:

Pavlov wanted to clarify how conditioned reflexes were acquired. Dogs naturally salivate for food; Pavlov thus called the correlation between the unconditioned stimulus (food) and the unconditioned response (salivation) an unconditioned reflex. On the other hand, when a stimulus does not elicit any response, it is called a neutral stimulus (bell sound).

Pavlov's experiment was to associate an unconditioned stimulus (food) with the presentation of a neutral stimulus (bell sound).

After repeating this association of stimuli, he found that the dog learned to salivate before the stimulus that previously did not elicit any (neutral) response even in the absence of the unconditioned stimulus (food). This salivation was significant because it demonstrated the ability to learn to anticipate future events as a survival advantage.

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.