Pollination is when an insect walks on flowers and picks up pollen from the male part of the flower which is a stamen which then takes it to the female part of the flower which is a carpal.
The name of the insect is a bee. The name of the flower is a buttercup. It took some nectar from the flower and went towards the trees.
I saw a long thin fly and I took a picture of it with the digital camera. The fly flew to a buttercup and then to some cow parsley. Then it went to a nest to store it.