B) Chemical Energy
It makes light energy into chemical energy for the plant to use.
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I’m pretty sure is the answer D-increased chance of cancer
The formation of the canyon provides a physical barrier that me lead to speciation between the two populations if interbreeding is prevented. The population to the west of the canyon will probably adapt to feeding on the berries on land, and might therefore evolve traits for a terrestrial, vegetarian existence. The turtles to the east of the canyon will evolve to take advantage of the river environment, and aquatic characteristics will be further emphasised.
Natural selection occurs when some of those traits help some individuals survive and reproduce more than others.