Bugs do a lot of different things. Bees visit the flowers of plants and take nectar and use it to make honey. While the bee is collecting nectar, it usually gets a powder on it called pollen. This is sort of like when you walk in the woods and seeds get stuck to your pants. Bees fly from one flower to the next, carrying this pollen. Some of the pollen falls off into the flowers, and the plants use that to reproduce! The plant is helping the bees, and the bees are helping the plants! That works out pretty well, don't you think?