Answer:
What is the effect of changing the environment on the feeding of birds with different beaks?
Explanation:
As can be seen in the question above, you are setting up an experiment with birds with different beaks. You bring about a change in the environment in which these birds live, removing all the fruit, to know what changes occur in the eating habits of these birds.
As you can see, its dependent variable is the feeding of birds with different beaks and its independent variable is the change in the environment.
In that case, the question that could be asked in this experiment would be: "What is the effect of changing the environment on the feeding of birds with different beaks?"
