A reinforcement schedule is a pattern that defines how often a desired response will be reinforced.<span>
</span>A variable-ratio schedule <span>is a schedule of reinforcement where a response is reinforced after an unpredictable number of responses.</span>
<span>Fixed-interval schedules on the other hand reinforce behaviors after set time periods.</span>
Receptors detect changes in the environment. For a stimulus to elicit a response, certain cells must have an appropriate receptor. Stimulation of the receptor initiates a specific signal pathway.
Answer: Hypogeal Germination and Epigeal Germination
Explanation: Facts
Adrenaline, Cortisol, Norepinephrine.