The answer to this question is <span> fixed ratio
In a </span> fixed ratio schedule of reinforcement, it requires <span>subjects to provides a set number of responses and a reward will be given after the completion of a certain numbers. Because of the high certainty, we will tend to receive high and steady rate of response if we use this type of schedule.</span>
The answer to this question is folic acid.
Answer:
the colonies taxed the sale and ownership of slaves
Answer:
class
Explanation:
the order
domain kingdom phylum class order family genus species