Middle Grades General Science 5 to 9
Question 20 of 30
Competency 6—Knowledge of processes of life
DIRECTIONS: Read the question and select the best response.
The Galapagos Islands provided Charles Darwin with the opportunity to observe various environments within close proximity. He noticed that the tortoises on each island varied in neck length and shell type. Hood Island, where the vegetation is sparse, had tortoises with long necks and shells that were curved around the legs and neck, allowing for greater mobility. On Isabela Island, where the vegetation is abundant and closer to the ground, the tortoises had shorter necks and dome-shaped shells. Evolution by natural selection in this scenario has occurred because of
- Enter to expand or collapse answer.Answer expanded
- Correct Response: B.