Bees can help many plants grow fruits by moving pollen from one flower to another.
There is a quick drop in bee numbers because the insects have lost their food and many natural areas have gone as humans have taken over more land for cities.
Small gardens are built on the tops of the bee bus stops in Britain.
Flowers in the small gardens can attract bees at the bee bus stops.
From the passage, I can learn that bees are important for plant growth, bee numbers are dropping, and Britain is building bee bus stops to help out bees.