Answer:
a. Unconditioned Stimulus (US) – Teacher saying jump
b. Conditioned Stimulus (CS) – Clearing the throat, saying Uhmmmm... and then banging the stick/ruler and saying jump
c. Unconditioned Response (UR) – Jumping after hearing the word “jump”
d. Conditioned Response (CR) – Jumping after hearing Uhmmmm….banging of ruler and word “jump”
Explanation:
Unconditioned response is one in which the response generated in natural while in conditioned response, response is generated in unnatural fashion.
Likewise, unconditioned stimulus is a natural causing factor behind any natural response while conditioned stimulus is an unnatural causing factor behind any unnatural response.
a. Unconditioned Stimulus (US) – Teacher saying jump
b. Conditioned Stimulus (CS) – Clearing the throat, saying Uhmmmm... and then banging the stick/ruler and saying jump
c. Unconditioned Response (UR) – Jumping after hearing the word “jump”
d. Conditioned Response (CR) – Jumping after hearing Uhmmmm….banging of ruler and word “jump”
The correct answer is 3 billion years old as per the banded iron sample obtained from Canada
Answer: thymus
Explanation: T cells adapt in the immune system just like the thymus
Answer:
Variation can be acted on by natural selection.
Explanation:
Variation are the difference that exist in the organism in terms of the body size and can be acted upon by natural selection.
Natural selection could act on the owl body size, favor the selection of owl with small body size especially when resources available are limited and can only sustain small number of individuals leading to availability of owl with small body size in such area and a gradual reduction in the number of owl with large body size.
