Magnolias, laurel, barberry, early sycamores, and palms.
I'm not sure what you're asking, but if you're looking for a word to describe this change its "mutation"
Answer:
Is this USA Test prep?
I believe that it is all except the 2nd one
Explanation:
In our community the ecosystem provides fresh drinking water via pipes called citywater or ground water. It should be protected well, because it is our cities only source of clean water, ''purified''.
In this question, there are no options given to choose from. So i would answer this question based on my knowledge. The most likely cause of the observed variation is adaptation and evolution. The birds of that island adapted to the food source and then they evolved as per the requirement of the place and food source.