Today, in our environmental science lecture, we're discussing the impact of urban development on local wildlife. A recent study in Melbourne found that while some species, like possums, adapt well to city life, others, such as ground-nesting birds, have declined significantly. The researchers monitored green spaces over two years and noted that the presence of native trees was the most critical factor for maintaining biodiversity. Interestingly, they also discovered that noise pollution, not light pollution, was the second biggest threat, affecting birds' ability to hear predators and communicate. So, when planning new housing estates, we must prioritize preserving existing vegetation and create quiet corridors.
❓ According to the lecture, which factor was found to be the MOST important for maintaining biodiversity in urban areas?