Answer:
UCS=US=unconditioned stimulus. UCR=UR=unconditioned response. CS=conditioned stimulus. CR=conditioned response. NS=neutral stimulus.
Animals eat marine creatures
we depend on water from marine ecosystems
Answer:
<em>Option "A" might be the correct answer</em>
<em>Explanation:</em>
<em>there are some of those viruses where it can be quite potent. Some viruses, such as the rhinoviruses, seldom cause serious illness. But others, such as parainfluenza and respiratory syncytial virus, can lead to severe lung infections in young children.</em>