<span>There is an organ in the brain sensitive to light changes, which then affects our sleepiness.
This sensitivity to light changes will determine our response to melatonin that influences our level of 'tiredness'.
The more melatonin that we have in our body, the more likely we feel sleepy and fall asleep.</span>
Answer: Passive solar technology
Explanation:
Passive solar technology is the method of using materials to attract sunlight for warmth. Solar energy is the energy that comes from the sun. To store this energy gotten from the sun you'll need some elements to transfer this energy then store them. According to the passage the individual used a black material (black material is used for conveying and storing heat, it's one of the best form for doing so), the black material and the water helps warm the water needed for the individual after his hiking which actually worked.
If your choices are the following:
<span> A) The United States were members of the League and were immediately involved.
B) The United States would only provide economic aid to their allies on a lend-lease policy.
C) The United States had reverted to a policy of isolationism, and therefore remained neutral.
D) The United States supported both sides with weapons under a cash and carry policy.
Then the answer is </span>C) The United States had reverted to a policy of isolationism, and therefore remained neutral
Personal control beliefs, also referred to as locus of control and personal mastery beliefs, reflect individuals' beliefs regarding the extent to which they are able to control or influence outcomes.
The answer is: conditioned stimulus (CS)
Conditioned stimulus refers to the neutral stimulus that trigger a specific response after being associated for a prolonged period of time with unconditioned stimulus.
In the case above:
- the toilet flush is previously a neutral stimulus that does not trigger any response.
- The toilet flush later on paired with unconditioned stimulus (hot water) that make jeff scream in pain
- Because of this, the toilet flush become a conditioned stimulus. This make jeff associate the toilet flush with hot water and make him twitch whenever he hear toilet flush while bathing.
