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.
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It's the FDA, or the Food and Drug Administration. <span>The Food and Drug Administration is a federal agency of the United States Department of Health and Human Services, one of the United States federal executive departments.They keep track of what goes through production lines and decide wether a product, or drug, is safe to open to the public for consumer use.</span>
Answer:
C. The rate at which soil bacteria perform nitrogen fixation
Explanation:
Since Xavier is raising vegetables in the same spot year after year it is reasonable to expect that the plants would deplete the soil of its resources. Since the soil doesn't have enough minerals and not enough time for the bacteria to perform nitrogen fixation the plants don't grow at the same rate and numbers that they used to at the beginning.