Once a small advertising lightbox can kill about 350,000 insects a year. Bright nights can seriously affect the life cycle of insects, especially adults. Insects are an important part of the food chain in nature. Many small animals, birds and bats Insects are the main food, and many plants rely on insects for pollination. If the types and numbers of insects change, the ecological environment will be seriously affected. The pressure of excessive lighting on energy waste and environmental pollution is self-evident. What does this passage mean? ['Main effects of light on plant and animal growth.', 'Close relationships between species in nature.', "Light pollution's interference with natural ecological balance.", 'The important role of insects in nature.']