Mark the most appropriate choice for the question.
Students observed that many sparrows no longer visit the school. What might have caused this? What actions can bring them back?
Answer variants:
Sustain nutrient cycle by returning elements to the soil and environment.
Distance from the Sun
Install bird feeders and nest boxes
Return organic matter
Lack of food and nesting spaces
1. Possible reason for fewer sparrows:
2. Step to bring sparrows back: