kūn chóng昆虫shù liàng数量jiǎn shǎo减少
Insects are very important to nature.
There are many insects around everyone.
Scientists have found that the number of insects is decreasing in many parts of the world.
In some places, insects have almost disappeared.
Insects are important because many birds, bats, and other animals eat insects.
Without insects, many animals would starve, and flowers would not bloom.
Scientists' research in Germany, the United States, Puerto Rico, and the United Kingdom found that the number of flying insects has decreased a lot.
The reasons include global warming, pesticides, and human environmental destruction.
Now, climate change causes more droughts, making it hard for insects to survive.
Scientists say we need to protect insects and reduce pollution and global warming so that nature can stay healthy.