Fact 1: Planting trees has a positive impact on an ecosystem. Fact 2: Birds are important components of ecosystems. Given the two facts above, what has a positive impact on birds?
Choose your answer from: [I] exercise; [II] planting trees; [III] recycling; [IV] community policing; [V] food and shelter; [VI] with their fur; [VII] squirrels; [VIII] four limbs;
Answer:
[II]