Multiple Choice
Encharta is sitting outside, looking at her beautiful garden. As the sun goes down, the colours become less bright and finally all become shades of grey. This is because:
A) the amount of photopigment is decreasing
B) the amount of photopigment is increasing
C) the cones are taking over for the rods
D) the rods are taking over for the cones
Correct Answer:

Verified
Correct Answer:
Verified
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