<span>No, it does not produce vitamin D.
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An established conditioned stimulus is paired with a new neutral stimulus in: higher-order conditioning.
Classical conditioning refer to a learning process that involves the repeated pairing of two (2) stimuli:
Basically, classical conditioning is a learning procedure which helps psychologists in understanding when a neutral stimulus is paired with a conditioned response or a neutral stimulus and an unconditional stimulus.
Similarly, a higher-order conditioning involves pairing an established conditioned stimulus with a new neutral (the second-order) stimulus, in order to make the new stimulus elicit (bring forth) the conditioned response, without presenting the initial conditioned stimulus.
Read more: brainly.com/question/24078563
The skin cells and the bones, tissue and the red cells in your body
Stem cells have the ability to replace damaged cells and treat disease. ... Stem cells, if they can be directed to differentiate into specific cell types, offer the possibility of a renewable source of replacement cells and tissues to treat diseases including Parkinson's, stroke, heart disease and diabetes.
Enzymes are proteins that control the speed of chemical reactions in your body. Without enzymes, these reactions would take place too slowly to keep you alive. Some enzymes, like the ones in your gut, break down large molecules into smaller ones.