The diagram shows the changes in the shape of the beak in a species of bird over a period of 300 years.
Time
Which best explains the change shown?
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Brian has a medical condition called cone dystrophy, which is a disorder of the cone cells in the eye. what symptoms would you expect brian to have? a. inability to see in the dark b. difficulty determining colors c. difficulty determining shapes and outlines d. inability to see in all light conditions